Police searching for a teenager who went missing more than a month ago have released CCTV images taken in the area where he was last seen.
Luke Durbin walking over a crossing in Ipswich and two others
Luke Durbin, 19, from Hollesley, Suffolk, vanished after leaving Zest nightclub in Ipswich on 12 May.
On Tuesday police issued images taken of Mr Durbin in the early hours of the morning and pictures of other people in the area who police want to talk to.
Suffolk Police urged any potential witnesses to come forward.
CCTV showing two men who may have seen Luke Durbin that night
Acting Det Insp Ian Addison, who is leading the enquiry, said: "The CCTV footage shows there are still a significant number of people in central Ipswich around 0330 and 0430 BST who have still not yet come forward despite extensive media appeals.
"It is very important that these people contact us as they may have information that can help us locate Luke."
Mr Durbin is described as white, 5ft 10in (1.77m), of slim build, with short mousey-coloured wavy hair and blue eyes.
At the time of his disappearance, he was wearing a black or grey long-sleeved collared shirt, blue jeans and brown suede shoes.
Images revealed by police show Mr Durbin walking across a road near the Buttermarket Centre and images of two people who may have seen Mr Durbin on that night.