Three people were slain in separate incidents in Prince George's County over five hours Wednesday and yesterday, police said.

A Hyattsville man was stabbed in the chest during a domestic argument about 8:20 p.m. Wednesday in the 2000 block of Erie Street in Adelphi, police said. Errol Hugh Samuels, 27, of the 3200 block of Toledo Place, ran to a nearby apartment for help and was taken to Washington Hospital Center, where he died a short time later, police said.

Andrea Glenise Macko, 24, of 11222 Evans Trail in Beltsville, was charged with first-degree murder and is being held without bond in the county jail.

About two hours later, Nicholas Anthony West, 20, of 1404 Nova Ave., Capitol Heights, was shot during a robbery at his apartment, police said. West, who was returning home from a trip to a nearby store about 10:15 p.m. Wednesday, was forced into his apartment at gunpoint by several men, police said.

West fled and was shot in the hallway, police said. Two other people in the apartment were robbed of cash and jewelry but were not injured, police said.

Nevel Hamilton of Brooklyn, N.Y., was shot to death and two men were wounded about 1:30 a.m. yesterday at Mr. Wick's Motel in Oxon Hill. Hamilton, who was staying at the motel in the 2800 block of Oxon Run Drive, was forced back inside his room by several assailants, police said.

Officers arrested Mark Anthony Johnson, 19, of the 100 block of Joliet Street SW, on the scene and charged him with first-degree murder and robbery with a deadly weapon.

The two wounded men, who were not identified, were hospitalized in stable condition.