It happened at 11:27 a.m. Wednesday October 16th in Southwest Philadelphia.
Surveillance video taken near the 2400 block of South 63rd Street shows a suspect with a handgun chasing 27-year-old Tyrik Griffin.
Police found Griffin, of the 6100 block of Reedland Street, a short distance away with gunshot wounds to his leg and lower back. He later died of his wounds.
Investigators are looking for a black male, 6'0"-6'1" tall with a medium build and Sunni-type beard.
He is seen in the video wearing dark colored clothing with "NIKE" in white letters across the chest of his sweatshirt.
Anyone with information is urged to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.