Alexandria police responded to three unrelated deaths overnight Thursday, including one suspected homicide in which a man was stabbed after an argument over a woman, according to police.

Ronald F. Reese, 23, of the 3100 block of Commonwealth Avenue, was found about 10 p.m. on East Reed Street "suffering from an apparent stab wound to the chest," Cpl. John Avery said yesterday.

Reese was taken by helicopter to Washington Hospital Center, where he was pronounced dead shortly after 11 p.m. Police arrested Billy W. Moore, 33, of the unit block of East Reed Avenue and charged him with murder.

Police also seized a knife they said was used in the slaying, which took place in the Lynhaven section of the city.

Shortly after 3 a.m. yesterday, police found a second victim after responding to a call about a fight in an alley behind the 1300 block of Wythe Street near the Braddock Road Metro stop.

Herbert L. McNeil, 33, of no fixed address, suffered a head wound and was taken to Alexandria Hospital, where he died at 4:18 a.m., according to Avery. Although police first classified the death as a homicide, it was changed to a suspicious death after a preliminary autopsy determined that the head wound was not the cause of death, Avery said.

Police said the body would be examined for toxic substances.

Police also found the body of an unidentified man yesterday morning in the alley behind the 900 block of Princess Street. Police said the man was homeless and died of natural causes.