CARNATION, Wash. - Six people, likely three generations of a family, were found dead yesterday at a rural property east of Seattle, and a law- enforcement official said police arrested the property owner's daughter and her boyfriend.

The official, who spoke on condition of anonymity because he wasn't authorized to release the names, identified the pair as Michele Anderson, 29, and her boyfriend, Joseph McEnroe. Both were booked into the King County Jail last night for investigation of six counts of homicide.

The victims included a boy about 3 years old, a girl about 6, a man and woman in their 30s, and a man and woman in their 50s. They were not identified, but they were "likely three generations" of one family, King County sheriff's Sgt. John Urquhart said.

The cause of death was apparently gunshots, Urquhart said. They were likely killed late afternoon or early evening on Christmas Eve, he said.

The property where the bodies were found is owned by Wayne Anderson, 60, and Judy Anderson, 61, according to public records.

The couple has three children, including Michelle, who lives on the property in a mobile home, said Mark Bennett, who identified himself as a family friend. He said another daughter, Mary, and a son, Scott, live in the area.

Urquhart said the bodies were found by a co-worker of one of the victims who had come to the house because one of the victims, who works for the Postal Service, did not report to work. *