CHICAGO (CBS) — Police have arrested the suspected gunman in a fatal gas station shooting last year in south suburban Dolton.

Police say 21-year-old Julian Upshaw was picked up this morning at a home in Robbins.

Upshaw was wanted in connection with the shooting of two Clark gas station employees during a robbery back in December.

19-year-old Arshad Vahora died.

A 55-year-old man was critically injured.

One of the suspects, 45-year-old Derrick Fils, turned himself in to police last month.

Police are still looking for a third suspect, 45-year-old Eric Brewer.