A 19-year-old Marine from Danville was killed in Afghanistan on Friday, according to a Danville city councilman, and his death represents the second Bay Area war casualty in as many days.

Joshua Corral, a 2010 graduate of San Ramon Valley High School, was killed in Afghanistan on Friday afternoon, according to Councilman Mike Doyle. The Department of Defense had not released notification of Corral's death as of Saturday morning.

Corral played freshman football at the high school, and his death was announced to the crowd attending Friday night's home game against Castro Valley.

"Everybody's devastated here because he was a nice, nice, nice, nice boy," Doyle said Saturday morning when reached by phone.

Sean Walsh, a 21-year-old California National Guard soldier from San Jose, was killed Wednesday in Afghanistan's Khost Province, the Department of Defense announced Friday.

Walsh died from injuries suffered when he encountered indirect fire during combat operations.

He is the second California National Guardsman to be killed in action in Afghanistan.