SPOKANE, Wash. (AP) - A hearing to determine if a Freeman High School student charged with shooting one classmate to death and wounding three others will be tried as an adult has been moved to May 21.

The hearing for 16-year-old Caleb Sharpe was previously set for April.

Sharpe is accused of opening fire in a hallway of Freeman High School last September, killing classmate Sam Strahan and injuring three others.

KREM-TV of Spokane reports that prosecutors say the expert hired to evaluate Sharpe needed more time.

Sharpe faces one charge of aggravated first degree murder, three charges of attempted first degree murder and other charges.

The Associated Press doesn't typically name juvenile suspects but is doing so because of the severity of the accusations and because Sharpe's name was released in public documents.