OAKLAND -- Police continue to investigate three unrelated shootings that wounded four people Saturday and Sunday. One man was shot in the 1400 block of Franklin Street in downtown Oakland shortly before 2 a.m. Sunday after an argument with another man, police said.

It wasn't known Sunday evening if the men knew each other or if the fight leading to the shooting was random. The victim had non life-threatening injuries and was in stable condition at an East Bay hospital Sunday. Police do not have a description of the suspect or the car he drove away in, a department spokesman said.

No one has been arrested.

About 5 p.m. Saturday, officers responded to reports that shots fired injured two people in the 8500 block of Plymouth Avenue in East Oakland, said Officer Joe Kroushour.

Witnesses told officers that two armed suspects were seen driving from the scene after the shooting.

A motive in that shooting was not yet known.

At 2:15 a.m. Sunday, a victim was shot in the 1200 block of 83rd Avenue, a half-mile from the Saturday shooting, Kroushour said.

The victim drove to a hospital and was recovering Sunday, police said.

No arrests have been made in either shooting, Kroushour said. Police did not release descriptions of suspects or vehicles involved in either shooting.

Contact Chris De Benedetti at 510-353-7011. Follow him at Twitter.com/cdebenedetti. Contact Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.