Phoenix ? A man shot three people Thursday in a computer room at a Phoenix community college, injuring two of them critically, authorities said. The gunman fled, but a suspect was arrested nearby.

The shooting at South Mountain Community College was part of a running dispute between the suspect and one of the victims, said Sgt. Andy Hill, a spokesman for the Phoenix Police Department.

“This was not a random shooter going around the campus shooting,” Hill said, noting that two of the injured people were struck by stray bullets.

The suspect was identified as Rodney Smith, who police said was a former student at the college.

Smith, 22, was arrested at a home a few miles away within a half-hour of the first 911 call about the shooting, police spokesman Reuben Gonzales said. Also arrested at the home were Smith’s parents and three other people on charges of interfering with an investigation and failure to obey a police officer, Gonzales said.

A 19-year-old man was in critical condition at Maricopa Medical Center, while a 20-year-old woman was upgraded from critical to stable condition Thursday night and a 17-year-old boy was in stable condition, hospital officials said.