The gang, two of whom were believed to have been carrying guns, forced their way into the property at Oakfield Drive in the town around 8pm on Saturday. They demanded money, before assaulting a man in his 50s. A woman and four children escaped injury before the gang left with a sum of cash.
“This was a particularly vicious assault, coming as it did in front of a family,” said Mr Dickson.
“Those behind it must be condemned in the strongest possible terms. They must be taken off the streets immediately, as they pose a serious danger to all.
“I urge anyone with information on this incident to pass it to police immediately.”