Two suspects killed after San Bernardino mass shooting

Police in California have named two suspects killed after a mass shooting which left 14 people dead at a social services centre.

The man and woman, Syed Rizwan Farook, 28, and Tashfeen Malik, 27, were killed in an exchange of fire with police.

Farook had been a county employee for five years, San Bernadino Police Chief Jarrod Burguan said.

The attack took place at an office event on Wednesday. None of the victims has been identified.

The incident marks the deadliest mass shooting in the US since 26 people were killed at a school in Newtown, Connecticut in 2012.

Burguan, who said another 17 people were wounded, said police were "reasonably confident" that there were just two shooters. The dead man and woman were believed to be a couple, he said. They were armed with assault rifles and semi-automatic handguns and wore military-style clothing.

Three possible explosive devices were found at the Inland Regional Center, where the shooting took place.

The police chief said that Farook had left the event - which was possibly a holiday party or a meeting - "under some circumstances that were described as angry" and returned with Malik.

Earlier, the FBI said it was not ruling out the possibility of terrorism but the situation is still being investigated.