Man wanted in robbery tied to Penn State student's murder now sought after off-duty cop shootout

A 19-year-old wanted in the robbery tied to the killing of a Penn State student is now being sought in connection with another violent Philadelphia crime after an off-duty police officer exchanged gunfire with suspected car thieves.

Khadfi Fleming is a person of interest in the Monday aggravated assault of the off-duty officer, according to the U.S. Marshals Service, which is offering an immediate cash reward for information leading to his whereabouts.

The confrontation unfolded early...