Published Saturday, 12 July 2014
It followed reports of a suspicious object. (© Pacemaker)
Police attended the centre on the Mallusk Road on Friday night.
It followed reports of a suspicious object. Officers from the army bomb squad later confirmed the item to be a "viable, letter bomb type device".
A spokesperson for the PSNI said: "There are no further details at present".
The alert ended at 1.45am on Saturday.
Ms Villiers has condemned the incident.
She tweeted: "Once again these reckless and cowardly individuals have demonstrated complete disregard for postal workers and local community. I condemn this action.
"Anyone with any information should pass it to @PoliceServiceNI @ChiefConPSNI."
Newtownabbey councillor Noreen McClelland of the SDLP said that those behind the letter bomb are "reckless thugs" and "put countless lives in danger".
She continued: "This was a cruel, callous act that could have left people injured or dead. Those behind it have no regard for the lives of anyone caught up in their attempts to maim and kill others.
"The office had to be evacuated last night while Army Technical Officers made the viable device safe. I would ask anyone who may have any information about this reckless act to contact the PSNI as soon as possible to help bring these thugs to justice."
© UTV News