DURHAM, N.C. — Durham police are investigating four fatal shootings that occurred during the weekend.

Investigators say several bullets were fired at Carlos Clayton from a small red car at 3:30 p.m. Saturday in the 500 block of Canal Street. Clayton was shot in the head and died at a hospital.

A second man, 20-year-old Robert Lee, was treated at the hospital for a non-life-threatening gunshot wound. Police are investigating the possibility that the shooting may have been gang-related. No charges have been filed at this time.

The second homicide occurred several blocks away less than nine hours later. The victim is identified as 30-year-old Arturo Lorenzo Peaks, who ran to a vehicle shortly after midnight and told the driver he had been shot.

Peaks, who had been shot multiple times in the torso, died at Duke University Hospital and investigators believe the shooting occurred in the 700 block of Eva Street. No charges have been filed and investigators are trying to determine if the shooting was gang-related.

A third man was found dead inside his home after a shooting was reported early Sunday morning. Police say James Christopher Clyde was killed by a single gunshot wound to the head. Investigators arrested 22-year-old Thomas Wayne Pope and charged him with murder.

At 9:45 p.m. Sunday, a Durham resident died and another was seriously injured during an apparent armed robbery at a convenience store.

When officers were called to Morehead Mini Mart, they found 35-year-old Monder Sudqi Mohammad shot to death. Mohammad's brother, Maan Sudqi Mohammad, who is also an employee, was taken to a local hospital for treatment of a gunshot wound. No charges have been filed at this time.