A Northern Virginia man was fatally shot and a Prince George's County man critically wounded early yesterday in separate confrontations with uniformed police officers, authorities reported.

In the Virginia incident, a man identified as Franklin M. Baskett, 25, was shot in the abdomen after he pointed a shotgun at a Fairfax County policeman from the doorway of an apartment at 3409 Glen Carlyn Dr.

Police spokesman Warren Carmichael said Sgt. Michael Baldinger and Officer David Lubas went to the apartment building about 4 a.m. after a telephone complaint from a woman that a loud argument was going on in a second-floor apartment.

When the officers arrived at the apartment, Baskin met them at the door with a shotgun at his side, Carmichael said.

Immediately, the officers shouted: "Police officers, don't move," Carmichael said. But the man raised the weapon and pointed it at Lubas, Carmichael said, prompting each of the officers to fire their service revolvers. One bullet struck Baskett in the abdomen, and he was pronounced dead a short time later.

Baldinger, a 13-year-veteran, and Lubas, an eight-year-veteran, were placed on routine administrative leave pending the outcome of an investigation of the matter.

In the second incident two Prince George's County policemen shot and critically wounded a man after he pointed a pistol at them, county police officials reported.

They said the incident occurred after the officers, who were answering a report that someone was shooting a gun in the 5200 block of Marlboro Pike about 3.45 a.m. found a man pointing a handgun at a motorist sitting in a stopped car.

The officers ordered the gunman to drop the weapon but the man pointed the gun at the officers, who opened fire, police said.

The wounded man, Leonard Rollon Crawford, 29, of 5276 Marlboro Pike, was taken by ambulance to Prince George's General Hospital, where he underwent surgery for gunshot wounds.

Officials said he was charged with carrying a dangerous weapon and assault.

The officers, Joseph Wiggs and Jimmy Staten, were also placed on administrative leave.

Officials said the motorist involved in the incident drove away before he could be questioned by police.