Don Ly, 68, was stabbed to death around 4:30 a.m. on April 18th in the 400 block of Vollmer Street.
Police say he was loading his fruit cart when he was stabbed multiple times.
Police say nothing was taken after the attack.
The video released by investigators shows the suspect walking in the 2700 block of South Randolf Street.
VIDEO: Watch the video on PhillyPolice.com. Anyone who recognizes him is asked to call Philadelphia Police at 215-686-TIPS (8477).