West Midlands Police warned over threat to kill officer
West Midlands Police said it was "business as usual" after receiving an anonymous warning over officers' safety.
The BBC understands a threat to kidnap and murder a serving West Midlands police officer led to a security alert being issued to staff.
The force has confirmed the anonymous threat is being investigated by its counter-terrorism unit.
Staff were first told on Monday night after the force received the call.
Assistant Chief Constable Garry Forsyth said the force was taking the threat "extremely seriously", but that there was no increased risk to the public.
09 Dec 2014