The Latest: AP Sources: Female shooter lived in Saudi Arabia

Pakistani intelligence officials say Tashfeen Malik, one of the shooters in the California massacre, moved as a child with her family to Saudi Arabia 25 years ago.

An expert says the revelation that one of the California attackers pledging allegiance to the Islamic State group on Facebook suggests the woman was inspired by IS ideology but wasn't necessarily in direct touch with the group.

Authorities have said that Syed Farook and his wife, Tashfeen Malik, stockpiled 12 pipe bombs, tools to make more explosives and well over 4,500 rounds of ammunition at the home.

The residence is in a neighboring city to San Bernardino, where the couple opened fire on a holiday party of Farook's county co-workers Wednesday, killing 14 people.

A U.S. law enforcement official says the wife of the couple blamed in the deadly California shootings pledged allegiance to the Islamic State group and the terror group's leader on Facebook using an alias then deleted the messages before the attacks.

Specifics details about Tashfeen Malik's postings weren't disclosed Friday by the law enforcement official, who spoke on condition of anonymity because this person was not allowed to discuss an ongoing investigation.

The remarkable disclosure about Malik's online activities provided the first significant details suggesting a motive for her participation with her husband, Syed Farook, in the shootings that killed 14 people and injured 21.