California shooting probe focussing on shooters' domestic contacts - source

Tashfeen Malik is pictured in this undated handout photo provided by the FBI, December 4, 2015. REUTERS/FBI/Handout via Reuters

WASHINGTON (Reuters) - The investigation into the mass shooting last week in California is now focussing closely on contacts the shooters may have had with radical Islamists in the United States, as opposed to overseas, a government source said on Monday. The source also said evidence in hand so far suggests the radicalisation of the shooters, Syed Rizwan Farook, 28, and his spouse, Tashfeen Malik, 29, started no earlier than 2014. (Reporting by Mark Hosenball; Writing by Tim Ahmann; Editing by Eric Walsh)