Cops investigating a number of city centre assaults have released images of a man they want to speak to.

Detectives at Stewart Street police station are looking into the incidents which happened over the past two weeks, between January 27 and February 9.

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They believe the man shown in the images could help them with their enquiries and are asking him or anyone who recognises him to contact them.

He is described as in his late teens to early twenties, of slim build, wearing a grey or dark grey jacket with the hood up and dark blue jeans.

He was seen to be riding a bike.

Anyone who can assist is asked to contact detectives at Stewart Street Police Station via 101.