https://www.mercurynews.com/2022/07/21/sjm-l-grenade/

CAMPBELL — Police warned neighbors along Fewtrell Drive that they might be hearing an explosion as officers safely detonated a live grenade that was found at a resident’s home Thursday afternoon.

Police tweeted at about 3:23 p.m. that they responded to a call about a grenade found at the home, off South Bascom Drive. Police didn’t say if the grenade was found in the house or in the yard or how it ended up there.