Two men have been charged with attempting to murder a police officer in Northern Ireland.

One of them, a 26 year old, is also charged with shooting at a undercover security force unit that thwarted the alleged attack in the border village of Garrison, Co Fermanagh on Saturday night.

He and a 32-year-old man face additional charges of possessing a firearm and ammunition with intent to endanger life.

Within an hour of the alleged murder bid, a 400lb car bomb was abandoned at the Belfast headquarters of the Policing Board - the Police Service of Northern Ireland's oversight body. The explosives failed to denote.

Both incidents have been blamed on dissident republicans opposed to the peace process.

The two are appearing in court in Dungannon.

They were two of five men arrested in the wake of the Garrison incident. Three were released without charge.