Jul 21, 11:28 AM EDT

Pakistani police: Gunmen on motorcycle open fire on police in Karachi, killing 3 officers, passer-by

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KARACHI, Pakistan (AP) -- Pakistani police say gunmen riding on a motorcycle have opened fire on a police vehicle in the southern port city of Karachi, killing three officers and a passer-by before fleeing the scene of the attack.

Karachi police chief Nauman Sadiqui says two people were also wounded in Friday's drive-by shooting in the Korangi neighborhood.

Dr Seemi Jamali, a spokeswoman at the Jinnah Hospital, says three bodies were brought to the hospital following the shootout and that a fourth person, who was wounded, died during treatment.

No one immediately claimed responsibility for the attack. Pakistani militant groups have been blamed for shooting and drive-by attacks on police and paramilitary security forces in recent years.

Karachi is the capital of southern Sindh province. Organized criminal groups also operate in the province.

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