He finds that the bullets used are the type that only a police officer would carry .
The police detective , Leoi Gei ( Anthony Wong ) , investigates the murder and learns that both of Mak 's parents have been shot to death .
Anthony Wong finds that the bullets used are the type that only a police officer would carry .
The police detective , Leoi Gei ( Anthony Wong ) , investigates the murder and learns that both of Mak 's parents have been shot to death .