NEWARK, Calif. (AP) _ Police blamed a bad tip from an informant for the mistaken drug raid that left a family frightened and sent the father to a hospital with multiple cuts and bruises.

''These people are the victims of a tragic set of circumstances,'' Newark Police Chief Ken Jones said Thursday.

A police informant pointed out the Kim apartment as a place where narcotics had been dealt, Jones said.

Bok Hwan Kim, 49, said he was alone Tuesday in the living room of the apartment he shares with his wife, three daughters and 78-year-old mother-in- law when police arrived outside his door.

Seven or eight members of the three-department Southern Alameda County Narcotics Enforcement Team swarmed into the house, put a gun to Kim's head and wrestled him to the floor, Kim said.

Attorney Shawn Steel said he plans to file a $1 million claim against the city, the first step in filing a lawsuit.

Kim, who was treated at a hospital for cuts and bruises about the face, said the officers grabbed his wife, Jung Ja Kim, handcuffed her and forced her to lie on the floor.

Police have apologized to the family for the raid.

The officers ransacked the house for more than a half-hour before realizing they were not in the home of drug dealers, Kim said.

Jones disagreed, and said he believed that the officers did not search the apartment beyond ''determining who was in the apartment.''

''It is my understanding,'' Jones said, ''that shortly after entering the building they realized they must have gotten bad information and immediately backed off.''