Court records indicate 24-year-old Felix Carrillo pleaded guilty Friday to involuntary manslaughter. A judge then sentenced him to two to five years behind bars.
Carrillo is one of three suspects charged in the Jan. 14 death of 23-year-old Kevin Kless in Old City.
Police say the trio attacked Kless, possibly thinking his shouts at a passing taxi were directed at them.
The other two men are awaiting trial.
Kless graduated from Temple University in 2010. He had recently returned to the city for a job at an insurance firm after working in Harrisburg.