Aberdeen police have charged a 31-year-old Baltimore man with attempted murder and assault in connection with a parking lot melee that injured five people.

Four victims, including an off-duty Aberdeen police officer who tried to stop a knife fight that broke out early Saturday between two men, remain hospitalized at Baltimore Shock Trauma Center in serious condition with multiple stab wounds.

Kibwa Cazemba Evans, who was treated for injuries at Johns Hopkins Bayview Hospital and later released, is charged with several counts of attempted murder and first- and second-degree assault.

The fight started about 1:50 a.m. between Evans and Roshon Harris, 25, of Aberdeen, in the parking lot of the Diamond Club on Hospitality Way, police said. During the altercation, Evans pulled out a knife and stabbed Harris, police said. Harris had no weapon, police said.

Officer Todd Duncan, 43, who was working a second job in security at the Clarion Hotel, adjacent to the club, attempted to stop the fight. A three-year veteran of the department, Duncan was stabbed several times. He was flown to Shock Trauma, along with Harris, who was also critically hurt.

"The investigation is continuing, but it appears only Evans had a knife, which has been recovered," said Sgt. Fred Budnick, spokesman for the Aberdeen police.

Three other men were stabbed several times while trying to assist the officer in the incident, police said.

Bryan Joyner, 29, of Baltimore, and Timothy Daughton, 35, of Perryman, were both originally taken to Harford Memorial Hospital in Havre de Grace but have since been transferred to Shock Trauma. Terrance Coleman, 28, of Elkton was treated and released from Union Hospital in Elkton.