A Southeast Washington man was fatally stabbed and two others were seriously injured after a fight broke out in a Temple Hills dance club early yesterday, authorities said, the second nightclub slaying in four days in Prince George's County.

Daniel E. McDowell, 29, was pronounced dead at Greater Southeast Community Hospital shortly after the 1:54 a.m. stabbing in the Legend Nightclub. The other men, a 31-year-old from the District and a 28-year-old from Mitchellville, were treated for their injuries at the same hospital and released. Police would not identify the injured men because they are witnesses.

Unlike the shooting death of a Northeast Washington man early Sunday, when only one witness emerged of the estimated 500 patrons inside the Crossroads Entertainment Complex in Bladensburg, several people identified the alleged assailant in yesterday's attack.

Security officers and off-duty county police stationed at Legend, in the 3200 block of Naylor Road, detained Antjoun O. Riddick, 26.

Riddick, of no fixed address, was charged with first-degree murder and other related charges. He was ordered held without bond last night.

Barbara Hamm, a police spokeswoman, said investigators were "trying to figure out what precipitated the fight" that witnesses said led to the stabbings.

A telephone message left for the nightclub's management was not returned.

Yesterday's stabbing was the second homicide at a county nightclub this week. Early Sunday, David Moncrieffe, 24, was shot to death on the dance floor at Crossroads, a club on Baltimore Avenue in Bladensburg, after he bumped into someone. No arrests have been made in that case.