The Los Angeles Police Department said in a statement that a resident of a home in the 1700 block of Christina Drive called officers at 10:15 a.m. after finding a “suspicious grenade” in an elderly relative’s bedroom.
Police said officers requested help from the Santa Clara County Sheriff’s Office Bomb Squad, which “determined that the device was a World War I vintage grenade that may have been alive.”
Four adjoining houses were evacuated and other nearby residents were asked to take shelter.
“Due to the precautionary measures taken, the staff chose to blow up the device in the backyard of the property,” police said.
Residents in the surrounding area were warned before the blast, police said.