Source: BBCNews
President Barack Obama is to deliver a rare Oval Office address later on Sunday on the San Bernardino shootings.
The US leader will discuss the broader threat of terrorism, how it has evolved and how it will be defeated, the White House said.
The FBI is investigating the mass shooting by a married couple that left 14 dead as an act of terrorism.
Syed Rizwan Farook, 28, and his wife Tashfeen Malik, 29, were killed in a shootout with police.
The Islamic State militant group said in a radio broadcast that the couple that carried out the attack were IS supporters, but gave no indication that the group was involved in its planning.
The FBI is also looking into reports Malik posted a message on Facebook pledging allegiance to IS around the time of the attacks.
Mr Obama will provide an update on the investigations in the televised speech, due at 20:00 EST on Sunday (01:00 GMT).
It will be his third Oval Office address - they are reserved for events of national importance.
