Police said 26-year-old Michael Robinson, of Duquesne, and another man ran, Glen Smith, when officers confronted them at Robinson's grandmother's home on Monday evening.
That was shortly after 29-year-old Lawrence Short, of Clairton, and 18-year-old Tyrone Coleman, of Duquesne, were gunned down while sitting on concrete steps near a residential street in Duquesne. Short is known to be a member of the hip-hop group Hardcore Entertainment.
Police said they found a rifle and two handguns -- one that had been reported stolen -- in a vehicle that witnesses said Robinson had driven from near the shooting.
Robinson is charged with two counts of homicide and weapons violations.
Robinson is a fugitive and should be considered armed and dangerous, police said. He is described as a black male about 6 feet tall and 200 pounds. He is known to wear glasses and a beard. Robinson is from the Duquesne area and has ties to West Mifflin and McKeesport.
In addition, detectives also secured a warrant for Smith, of Duquesne.
The charges stem from the foot pursuit during which Smith threw a handgun which was recovered and determined to be stolen.
Smith, 27, is charged with weapons violations, receiving stolen property, and tampering with evidence among other charges, according to police.
Smith is described as 5-feet 7-inches tall and weighs about 140 pounds. He has a light complexion and facial. Smith is from Duquesne and is known to frequent West Mifflin and McKeesport.
Anyone sighting either of these men should call 911 immediately. Anyone with information on their whereabouts is asked to call the homicide unit at 412-473-1300.