FBI told San Bernardino County staff to tamper with gunman's Apple account

• Local government move made taking Apple to court inevitable
• Tech giant contends enabling access would violate user trust
• Apple: FBI is making demands even China hasn't asked for
• Apple v FBI: what's the beef, how did we get here and what's at stake?

The San Bernardino County government on Friday night said the FBI told its staff to tamper with the Apple account of Syed Farook, who with his wife, Tashfeen Malik, carried out the December shooting in which 14 people were killed.

Related: Apple says the FBI is making access demands even China hasn't asked for