By . Rebecca Camber . The body of an Irish teenager who died after disappearing during a college trip to London was found on a rooftop of a building on Leicester Square, it emerged this afternoon. Patrick Halpin, who was 18, is believed to have fallen from the higher roof of the Burger King restaurant onto a lower one, thought to be that of the Zoo Bar where he had been with friends from college. A Metropolitan Police Service spokesman said: 'We believe he gained access to the Burger King roof and fell down to a lower roof'. The body of Patrick Halpin, 18, was found on an enclosed roof last night - he is thought to have fallen from the higher roof of the Burger King restaurant in Leicester Square onto a lower one after going up a fire escape . Zoo Bar and Club remained closed today while police tried to piece together Patrick's last moments . Tribute: Flowers were laid today near the spot where the popular Irish student is believed to have fallen to his death . Patrick's body was found at 7.50pm last night.  He was last seen shortly after midnight on Wednesday when he left Zoo Bar in Bear Street, just off Leicester Square, to get food from Burger King. He is believed to have climbed up the external fire escape to get onto the roof before falling onto another enclosed roof area. Patrick's body was found after police traced his mobile phone signal, and discovered CCTV showing him climbing up the stairs. Scotland Yard are still trying to establish whether there were any suspicious circumstances to the death. One local worker said the stairs were behind a door that was usually kept locked. The student had been visiting the capital on a trip with his college when he disappeared in freezing temperatures wearing just a pair of jeans and a blue T-shirt. His sister, Regina Halpin, had earlier issued an appeal on Facebook to help find her brother. She wrote: '(Patrick) was in London on a trip this week and went missing from a nightclub last night and hasn’t been seen since.' 'He was in The Zoo nightclub just of Leicester Square and left to go to Burger King but did not return home. He should have been staying in the Astor Museum Hostel, Bloomsbury, London,' she added. She said Patrick's friends became worried about him when he failed to pick up tickets to the musical The Book Of Mormon which he had been particularly looking forward to seeing. Hours later his frantic family mounted a search of the area. Popular student: Friends said Patrick had been looking forward to watching The Book Of Mormon musical . Scene: A body was found at around 7.50pm last night in an enclosed area (pictured) between Zoo Bar, where Mr Halpin had spent the evening, and a nearby Burger King . Scene: A photo taken today of the alley where the body of a teenager was found . Discovery: The body was found in the alley near between Zoo Bar, where the 18-year-old was, and a Burger King . Warning: A sign on a door above a stairwell tells people to keep. There is believed to footage of the missing student climbing an external stairwell which leads up to the roof . Police officers stand in an alleyway off Charing Cross Road, close to Leicester Square in central London, after the body was found . No entry: A police officers blocks the entrance to an alleyway in central London after a body was found. The body is believed to be that of missing Irish student Patrick Halpin . Emergency response teams line up in Leicester Square after a body, believed to be that of missing Irish student Patrick Halpin, was found nearby . The body believed to be that of Patrick Halpin was found in Leicester Square just as celebrities were leaving premiere of Cuban Fury. Investigators think Patrick may have fallen from this rooftop . Mr Halpin was last been scene leaving Zoo Bar to get some food. He was wearing only a t-shirt and jeans, despite freezing temperatures . Error: Yesterday Patrick Halpin's family were mistakenly informed that the teenager had checked in for his flight home to Ireland. They later found out that the airline had made a mistake . Earlier yesterday, the family were mistakenly informed that the teenager had checked in for his flight home to Ireland. His father, Paddy, and sister Regina, 22, are said to have rushed to the airport only to find that the airline had made a mistake. Last night a police spokesman said: 'Enquiries are underway to establish the identity of the deceased.'
Officers searching for Patrick Halpin discovered his body close to Zoo Bar .
The 18-year-old went missing from the central London club on Wednesday .
He left the bar wearing only a t-shirt and jeans, despite freezing weather .
Body found in enclosed roof area next to Leicester Square Burger King .
Earlier family were mistakenly told the student had boarded a plane home .
But it emerged as a false alarm when airline realised they'd made a mistake .
By . Rebecca Camber . The body of an Irish teenager who died after disappearing during a college trip to London was found on a rooftop of a building on Leicester Square, it emerged this afternoon. Patrick Halpin, who was 18, is believed to have fallen from the higher roof of the Burger King restaurant onto a lower one, thought to be that of the Zoo Bar where he had been with friends from college. A Metropolitan Police Service spokesman said: 'We believe he gained access to the Burger King roof and fell down to a lower roof'. The body of Patrick Halpin, 18, was found on an enclosed roof last night - he is thought to have fallen from the higher roof of the Burger King restaurant in Leicester Square onto a lower one after going up a fire escape . Zoo Bar and Club remained closed today while police tried to piece together Patrick's last moments . Tribute: Flowers were laid today near the spot where the popular Irish student is believed to have fallen to his death . Patrick's body was found at 7.50pm last night. He was last seen shortly after midnight on Wednesday when he left Zoo Bar in Bear Street, just off Leicester Square, to get food from Burger King. He is believed to have climbed up the external fire escape to get onto the roof before falling onto another enclosed roof area. Patrick's body was found after police traced his mobile phone signal, and discovered CCTV showing him climbing up the stairs. Scotland Yard are still trying to establish whether there were any suspicious circumstances to the death. One local worker said the stairs were behind a door that was usually kept locked. The student had been visiting the capital on a trip with his college when he disappeared in freezing temperatures wearing just a pair of jeans and a blue T-shirt. His sister, Regina Halpin, had earlier issued an appeal on Facebook to help find her brother. She wrote: '(Patrick) was in London on a trip this week and went missing from a nightclub last night and hasn’t been seen since.' 'He was in The Zoo nightclub just of Leicester Square and left to go to Burger King but did not return home. He should have been staying in the Astor Museum Hostel, Bloomsbury, London,' she added. She said Patrick's friends became worried about him when he failed to pick up tickets to the musical The Book Of Mormon which he had been particularly looking forward to seeing. Hours later his frantic family mounted a search of the area. Popular student: Friends said Patrick had been looking forward to watching The Book Of Mormon musical . Scene: A body was found at around 7.50pm last night in an enclosed area (pictured) between Zoo Bar, where Mr Halpin had spent the evening, and a nearby Burger King . Scene: A photo taken today of the alley where the body of a teenager was found . Discovery: The body was found in the alley near between Zoo Bar, where the 18-year-old was, and a Burger King . Warning: A sign on a door above a stairwell tells people to keep. There is believed to footage of the missing student climbing an external stairwell which leads up to the roof . Police officers stand in an alleyway off Charing Cross Road, close to Leicester Square in central London, after the body was found . No entry: A police officers blocks the entrance to an alleyway in central London after a body was found. The body is believed to be that of missing Irish student Patrick Halpin . Emergency response teams line up in Leicester Square after a body, believed to be that of missing Irish student Patrick Halpin, was found nearby . The body believed to be that of Patrick Halpin was found in Leicester Square just as celebrities were leaving premiere of Cuban Fury. Investigators think Patrick may have fallen from this rooftop . Mr Halpin was last been scene leaving Zoo Bar to get some food. He was wearing only a t-shirt and jeans, despite freezing temperatures . Error: Yesterday Patrick Halpin's family were mistakenly informed that the teenager had checked in for his flight home to Ireland. They later found out that the airline had made a mistake . Earlier yesterday, the family were mistakenly informed that the teenager had checked in for his flight home to Ireland. His father, Paddy, and sister Regina, 22, are said to have rushed to the airport only to find that the airline had made a mistake. Last night a police spokesman said: 'Enquiries are underway to establish the identity of the deceased.'
a building on Leicester Square, it emerged this Wednesday when he left Zoo Bar in Bear Street, before falling onto another enclosed roof area. week and went missing from a nightclub last night a teenager was found . Discovery: The body was the 18-year-old was, and a Burger King . Warning: close to Leicester Square in central London, Patrick Halpin was found in Leicester Square just only a t-shirt and jeans, despite freezing family were mistakenly informed that the teenager airline had made a mistake. Last night a police