A 22-year-old man accused of fatally shooting a 96-year-old Seattle-area man with the man's own gun and bashing the man's granddaughter a dozen times with a crowbar has been charged with first-degree murder and first-degree assault.

King County prosecutors charged Shane Chamberlain yesterday in Saturday's attack on Philip Hamlin and his granddaughter, Bethany Hamlin. The woman was treated for her injuries.

Chamberlain's bail was set at $2 million, with arraignment scheduled Feb. 10.

 In court papers, prosecutors say Chamberlain attacked Bethany Hamlin as she vacuumed at her grandfather's house in the south Seattle suburb of Normandy Park. She defended herself with a metal chair and ran to a neighbor's house. Prosecutors say Chamberlain searched for Philip Hamlin's revolver, shot the elderly man twice, then called 911 to say what he had done.

Police say Chamberlain's wife worked as Philip Hamlin's caregiver.

It was not known late yesterday whether Chamberlain has a lawyer.