Police in the North have arrested two men in connection with the murder of County Down man Pat McCormick.
The 55-year-old was last seen in the town of Comber near Newtownards on May 30th.
Detectives believe he was killed shortly after going under an archway leading off Castle Street towards an apartment complex.
Two men aged 20 and 32-years-old were arrested this morning on suspicion of his murder.
It comes as specialist teams carry out land and water-based searches for his remains at a number of lakes near the towns of Moneyreagh and Ballygowan.
The teams are using specialist victim recovery dogs and divers.
PSNI Detective Chief Inspector Peter Montgomery said: “I believe Pat was murdered in or around the vicinity of flats in Castle Street, Comber sometime after 10.45pm on Thursday 30th May.
"CCTV footage shows him walking across Castle Street, where he goes under an archway that leads to some flats.
"This is the last sighting of him anywhere."
He called on anyone with information or who may have seen Mr McCormick on the day he disappeared to contact police.
"Any information could prove vital," he said.
"I would like to make a particular appeal in relation to the movements of a blue Ford Transit van which was spotted on the Old Ballygowan Road in Comber at around 2pm on Friday 31st May."