Police searching for a missing County Down woman have questioned drivers in the village where she was last seen.
Police stopped vehicles one week after Lisa disappeared
Police investigating the disappearance of Lisa Dorrian, 25, from Bangor, said they could not rule out a crime.
Extensive air and land searches have taken place along the Ards Peninsula and the police underwater search unit has also been involved.
Traffic in Ballyhalbert was stopped at 0500 GMT on Monday, exactly one week after Miss Dorrian was last seen.
She left her handbag and personal belongings behind her at a party in a caravan park on 28 February and has not made contact with friends or family since.
At the weekend, her sisters and friends helped police search ground near the park, which is on the site of a disused wartime airfield.
Lisa left her handbag and personal belongings behind at a party
Her family said she had been spending quite a lot of time at the caravan park in Ballyhalbert in recent weeks.
Ex-boyfriend Jimmy Mills said Lisa had made new friends in the area.
"She had started to run about with different people and she started hanging about down round this area," he said.
"I used to be with her all the time, day in and day out. Now she has moved on in her life. She was my first love and I just hope she's all right.
"I really do pray and hope she's going to be okay."
Lisa's father, John, who has made an emotional appeal for assistance in finding his daughter, said her disappearance was baffling.
"It is totally out of character for Lisa, she always contacts her family usually within a couple of days. It is never any longer than that, even though she doesn't live at home."
Some of the people at the party on the night she disappeared have already come forward to help police with their inquiry.
Lisa is described as being 5ft 4ins in height, with blonde hair and was wearing a white short sleeved top with lettering on it, cream tracksuit bottoms and a pair of white furry moon boots.
The police want anyone with information to contact detectives at Newtownards police station.