They are appealing for witnesses and information following the report of a robbery in the Nelson Drive area.
A police spokesperson said: “It was reported that at approximately 6.30 pm on Thursday 3 November, a man was walking on a green area in the Nelson Drive area when he was attacked by two males from behind.
“He was on the back of the head and dragged him to the ground.
“The two males were described as being in their 20s, one wearing a Northern Ireland top with blue tracksuit bottoms and the other wear a blue hooded top.
“They made off with the man’s wallet containing a sum of money.
“The man sustained injuries, however, they are not believed to be life threatening.
“We are appealing to anyone who knows anything about this incident to connect Strand Road Police Station on the non-emergency number 101, quoting reference number 361 of 04/11/16.”
Alternatively, information can be passed anonymously to Crimestoppers on freephone 0800 555 111.