William Lindsay III, 32, was killed on the 3800 block of Ridge Avenue on July 12 around 8:35 p.m. Lindsay was cycling to meet up with friends when he was hit less than a mile from his house.
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Police say they're looking for a white Chevy Camaro with a red racing stripe.
Video captures the Camero after the deadly accident. Police say the vehicle was last seen driving northbound on Rt. 1 from Ridge Avenue.
READ MORE: Family keeps cyclist's memory alive after fatal Philadelphia hit-and-run
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The Lindsay family joined investigators Wednesday afternoon, pleading for the driver to come forward.
"We miss him terribly, and for this tragedy to happen, we are heartbroken," said Lindsay's father.
There is now a $25,000 reward for information leading to an arrest.
Anyone with any information is asked to call Philadelphia police.