North Wales Police are renewing an appealing for witnesses after another report of an object being thrown from a bridge at Caerhun, Bangor, earlier this month.
Detective Constable Matthew Corcoran said that they were now calling for more information after another witness had come forward.
He said: “A witness has now informed us that he was in a car damaged by a stone or rock thrown from the bridge on the A55 at Caerhun on Wednesday March 2nd between approximately 10.45pm and 11.15pm.
“After the incident this person said that he looked back towards the bridge and saw a figure running from the bridge towards Caerhun.
“He saw this person from the rear and describes them as wearing a red hooded top and gloves which are described as being flashy and coloured green yellow and pink.
“I am asking anyone who recognises this description or knows who this person may be to get in touch with me at Bangor Police Station.”
Police are currently investigating five incidents of a similar nature between March 2nd and March 8th and a local man has been bailed pending further inquiries.
Anyone with information should call North Wales Police on 101 (if in Wales) or 0845 6071001 (Welsh) 0845 6071002 (English) alternatively text 66767 or Crimestoppers Wales/Cymru anonymously on 0800555111.