A suspicious package found at a sorting office in Northern Ireland was a viable letter bomb, police said.

A spokeswoman for the Police Service of Northern Ireland (PSNI) said: " Police are currently attending a security alert following the discovery of a suspicious package at the postal sorting office in Mallusk Road, Newtownabbey."

Army Technical Officers were tasked to the scene.

The police spokeswoman said it was declared " a viable letter bomb type device".