Authorities say one person was injured when a pipe bomb disguised in a newspaper exploded at a residence in a San Francisco Bay area suburb.
The explosion in Vacaville occurred around 10 a.m. Sunday and forced the evacuation of surrounding homes. The victim was airlifted to a hospital although the extent of the person's injuries was not immediately clear.
Police say the bomb was wrapped in a Sunday newspaper. Investigators apparently discovered one more pipe bomb in the same neighborhood.
They are advising residents within a half-mile radius of the explosion not to approach any package or item delivered Sunday morning.