By . Daily Mail Reporter . PUBLISHED: . 11:18 EST, 1 January 2014 . | . UPDATED: . 18:10 EST, 1 January 2014 . Thirteen people have been injured following a massive explosion at a building in downtown Minneapolis that forced residents to jump from windows. Six people are in critical condition following the morning blaze. Some of the victims suffered burns, while others suffered trauma as they jumped to the ground from windows on the third floor. The three-story building, 516 Cedar Avenue, houses a grocery and several apartments - and authorities say they fear residents could still be stuck inside. Scroll down for video . Ferocious: A blaze can be seen at a store and apartment building in Minneapolis on Wednesday - 13 people have been hurt after the building exploded, including 6 in critical condition . Terrifying: A closer image shows flames licking the windows of the building, which has 10 apartments . Rescue: Crews are pictured battling the fire this morning as collapsed floors inside hindered their search . Search: Fire fighters carry a victim down a ladder after arriving on the scene of the explosion . Hurt: Thirteen people were taken to hospital after the fire, with a mixture of burn and trauma injuries . Desperate: A man is seen climbing from a window towards a ladder in a desperate bid to escape the fire . Emergency responders received the first reports of the explosion at 8.16am, Minneapolis Fire officials told WCCO, and arrived on the scene within minutes - but after 15 minutes they were forced to evacuate the building due to dangerous conditions. The firefighters are battling to put out the flames and look for potential victims in freezing conditions - as temperatures plunge to a degree below freezing - raising the danger of hypothermia. Temperatures were so low that water was freezing as it came out of their hoses, CNN reported. In addition, floors inside the building have collapsed, making their mission more dangerous. 'These are very treacherous conditions,' Minneapolis Fire Chief John Fruetel said. Video Source KSTP . Rescue: A resident is comforted by law enforcement as firefighters try to put out the blaze . Distraught: Distressed neighbors gather outside the home in south Minneapolis this morning . Destroyed: The house was completely gutted by the fire and authorities fear residents might still be inside . CNN reported on Wednesday morning that it . was not yet clear if the people had jumped from the windows, or if they . had been pushed as flames engulfed the rooms. It is not yet known what caused the fire. Smoke and flames were seen billowing . out of the windows on Wednesday morning, while nearby residents gathered . in the streets to watch. Around 50 firefighters have swarmed the . scene and at least a dozen people were transported to Hennepin County hospitals. Chief Fruetel told KMSP that nine of the building's 10 apartment units were occupied, and said he believes victims are still unaccounted for. Eerie: The downtown building was gutted by the fire, which started around 8am on Wednesday . Before the blaze: The building, including the Otanga Grocery, can be seen in a Google map before the fire . Freezing conditions: The fire chief said his staff were working in 'treacherous conditions' to put out the flams . 'This is a tragic morning for the city of Minneapolis,' Mayor-elect Betsy Hodges said. A family assistance center will be set up at a nearby community center, and the mayor, mayor-elect and councilman will be on hand to speak with families and neighbors. Greg Nelson, supervisor of the Minneapolis Emergency Communications Center, said the building is likely a total loss. Out of control: Smoke billows across the morning sky as firefighters fight the massive flames . Battle: Fire crews respond to the scene of the exploded building on Cedar Avenue this morning . Fight: Firefighters were evacuated from the building after 15 minutes due to dangerous conditions . Blaze: Emergency services can be seen fighting flames at a three-story apartment block in Minneapolis .
Three-story building containing a grocery store and apartments in Minneapolis burst into flames around 8am on Wednesday .
13 people were injured and 6 people are in critical condition .
Firefighters were forced to leave the building after 15 minutes due to collapsed floors and dangerous sub-zero temperatures .
It is not yet clear what caused the blaze .
By . Daily Mail Reporter . PUBLISHED: . 11:18 EST, 1 January 2014 . | . UPDATED: . 18:10 EST, 1 January 2014 . Thirteen people have been injured following a massive explosion at a building in downtown Minneapolis that forced residents to jump from windows. Six people are in critical condition following the morning blaze. Some of the victims suffered burns, while others suffered trauma as they jumped to the ground from windows on the third floor. The three-story building, 516 Cedar Avenue, houses a grocery and several apartments - and authorities say they fear residents could still be stuck inside. Scroll down for video . Ferocious: A blaze can be seen at a store and apartment building in Minneapolis on Wednesday - 13 people have been hurt after the building exploded, including 6 in critical condition . Terrifying: A closer image shows flames licking the windows of the building, which has 10 apartments . Rescue: Crews are pictured battling the fire this morning as collapsed floors inside hindered their search . Search: Fire fighters carry a victim down a ladder after arriving on the scene of the explosion . Hurt: Thirteen people were taken to hospital after the fire, with a mixture of burn and trauma injuries . Desperate: A man is seen climbing from a window towards a ladder in a desperate bid to escape the fire . Emergency responders received the first reports of the explosion at 8.16am, Minneapolis Fire officials told WCCO, and arrived on the scene within minutes - but after 15 minutes they were forced to evacuate the building due to dangerous conditions. The firefighters are battling to put out the flames and look for potential victims in freezing conditions - as temperatures plunge to a degree below freezing - raising the danger of hypothermia. Temperatures were so low that water was freezing as it came out of their hoses, CNN reported. In addition, floors inside the building have collapsed, making their mission more dangerous. 'These are very treacherous conditions,' Minneapolis Fire Chief John Fruetel said. Video Source KSTP . Rescue: A resident is comforted by law enforcement as firefighters try to put out the blaze . Distraught: Distressed neighbors gather outside the home in south Minneapolis this morning . Destroyed: The house was completely gutted by the fire and authorities fear residents might still be inside . CNN reported on Wednesday morning that it . was not yet clear if the people had jumped from the windows, or if they . had been pushed as flames engulfed the rooms. It is not yet known what caused the fire. Smoke and flames were seen billowing . out of the windows on Wednesday morning, while nearby residents gathered . in the streets to watch. Around 50 firefighters have swarmed the . scene and at least a dozen people were transported to Hennepin County hospitals. Chief Fruetel told KMSP that nine of the building's 10 apartment units were occupied, and said he believes victims are still unaccounted for. Eerie: The downtown building was gutted by the fire, which started around 8am on Wednesday . Before the blaze: The building, including the Otanga Grocery, can be seen in a Google map before the fire . Freezing conditions: The fire chief said his staff were working in 'treacherous conditions' to put out the flams . 'This is a tragic morning for the city of Minneapolis,' Mayor-elect Betsy Hodges said. A family assistance center will be set up at a nearby community center, and the mayor, mayor-elect and councilman will be on hand to speak with families and neighbors. Greg Nelson, supervisor of the Minneapolis Emergency Communications Center, said the building is likely a total loss. Out of control: Smoke billows across the morning sky as firefighters fight the massive flames . Battle: Fire crews respond to the scene of the exploded building on Cedar Avenue this morning . Fight: Firefighters were evacuated from the building after 15 minutes due to dangerous conditions . Blaze: Emergency services can be seen fighting flames at a three-story apartment block in Minneapolis .
jump from windows. Six people are in critical at a store and apartment building in Minneapolis on Wednesday - 13 people have been hurt after the were forced to evacuate the building due to pushed as flames engulfed the rooms. It is not yet known what caused the fire. Smoke and flames gutted by the fire, which started around 8am on Wednesday . Before the blaze: The building, were evacuated from the building after 15 minutes