It follows the discovery of a suspicious object in Pembrook Loop in Poleglas.
The alarm was raised as Army technical officers were at the scene of an earlier alert over a suspicious object.
The device was found at Bell Steel Road in Poleglass on Tuesday afternoon and as a result police have closed roads between Brians Well Road and Stewartstown Road while the clearance operation is ongoing
The ATO was earlier tasked to the scene of a security alert at Market Square in Dungannon.
A number of premises were evacuated by police while an object is examined.
It has now been declared a hoax.