The FBI said yesterday that it is still unclear why a Tennessee bank robbery suspect had rented an apartment in Stafford County, where an FBI agent shot him to death Monday night after he fired a handgun at officers as he tried to flee.

Kelvin J. Clark, 27, was wanted in connection with a May 7 bank robbery in his home town of Clarksville, Tenn. Lt. Gene Grubbs, a Clarksville police department spokesman, said Stafford County sheriff's deputies and FBI agents found Clark at the England Run North apartments through a tip about his getaway car.

D. Keith Bryars, the FBI supervisory special agent in Nashville, said Clark's girlfriend, Katina D. Thomas, 30, was arrested last week after she came in for an interview at an investigator's request. Police said Thomas, who was charged as an accomplice in the bank robbery, drove the getaway car.

Bryars said that Clark also was wanted for questioning in a December 2003 killing in Arkansas but that his connection to the crime wasn't clear.

Clark had been convicted in Tennessee in the past of aggravated burglary, sexual battery and fraud, according to a statement issued by the FBI's Richmond office.

Monday's shooting was the second time in less than three weeks that a law enforcement official shot someone in Stafford County.

Authorities said a sheriff's deputy shot Godfrey Lee Williams, 57, of Spotsylvania County on May 16, after Williams arrived at the jail with an assault rifle. His son was jailed there and Williams was apparently upset, according to the sheriff's office, which reported that his injuries were not life-threatening.