A witness reported that around that time they saw a Blue Honda Civic parked outside the Takapu Road address with about 5 males inside.
Police said in a statement they were disgusted with this cowardly attack on an elderly man in his home.
"The victim is shaken but bearing up well considering the circumstances. Police commend the victim for doing the right thing in that he looked out the window rather than open the door. Police believe if he had opened the door then he would have been seriously assaulted," the statement said.
Police would like to hear from anyone who may have information about who is responsible. It is believed that the male who was struck in the head may have swelling or injuries to the top of his head.
Any information regarding such activities maybe reported to Police on 06 8310700 or information can be left anonymously on Crimestoppers 0800 555 111.