Three people were killed in the District during the weekend in unrelated incidents, two of them beaten to death and one of them stabbed, D.C. police said.

The killings raised to eight the number of homicides in the first seven days of the year. A D.C. police spokesman said no motives had been established in any of the cases and no suspects had been arrested. Noting that no guns had been used in the weekend killings, the spokesman said, "It happens in spurts like that sometimes."

Almost 78 percent of D.C.'s homicide victims last year were shot to death. Seven percent were beaten to death and 13.5 percent were stabbed, police said.

Police said the first killing apparently took place Saturday. Authorities found a 26-year-old man, beaten to death, about 7 p.m. in an apartment in the 2000 block of 38th Street SE. His identity had not been released yesterday.

Shortly after 10 p.m. Sunday, the weekend's second homicide victim, Beverly Ann Clark, 35, was found fatally stabbed in her apartment in the 3400 block of Holmead Place NW.

Police said the weekend's final victim was discovered by authorities about two hours later lying on the sidewalk in front of his apartment in the 3900 block of Wheeler Road SE. Police said Charles D. Fisher, 27, apparently also had been beaten to death.

Also yesterday, D.C. police identified a woman killed Friday as Christine Ann Starks, 44, of the 2500 block of 14th Street NE. Police found her beaten to death in her apartment shortly after 7 p.m.