At approximately 03:50hrs on Monday, 9 April police were called by a man making threats and claiming he was in possession of a firearm at an address in Collier Row.
Firearms officers attended the location and were informed the man had left the address, armed with a firearm.
At approximately 04:45hrs a man - believed to be aged in his 40s - was shot by police in the vicinity of Collier Row Road and Lodge Lane. He was pronounced dead at the scene at 05:17hrs.
Road closures remain in place around the scene.
The Directorate of Professional Standards has been informed. A mandatory referral has been made to the Independent Office for Police Conduct.