SAN FRANCISCO (CBS SF) — San Francisco police were seeking the public’s help in finding the person responsible for a fatal pedestrian hit-and-run crash over the weekend.

Officers were dispatched at around 12:20 a.m. Saturday to a vehicle versus pedestrian collision at Geary Blvd. and Park Presidio Blvd. in the city’s Richmond District. They found a man suffering from life-threatening injuries after being hit by a car.

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The officers began life-saving measures until medics arrived to take over, but the man was declared dead at the scene, police said.

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Investigators from the department’s Traffic Collision Investigations Unit (TCIU) determined that the man was in the crosswalk when he was hit by a dark-colored compact car, possibly a Mini Cooper convertible, which was traveling northbound along Park Presidio.

The vehicle should have front end damage, police said.

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Anyone with information about the crash, or who has any cellphone or surveillance camera video, was urged to contact the police department’s TCIU main line at 415-553-1641 or the SFPD 24-hour-tip line at 1-415-575-4444. Anonymous tipsters can also text information to TIP411 and begin the message with SFPD.