At least three people and a robber were killed in separate firing incidents here in Karachi on Thursday, police said. According to details, Gul Muhammad was killed when some unidentified gunmen opened fire on him. As a result, he died on the spot. The incident occurred in Shirin Jinnah Colony while a dead body was recovered from the new Karachi area. 25-year-old Suraj was killed when unidentified gunmen opened fire in the Korangi area. On the other hand a robber was killed in a police encounter while his accomplice managed to flee. Police registered cases of the incidents and started investigation.