Aydin Dogan was last seen in the Portobello area around 4pm on Friday.

Lee Niven was last seen in Bishopbriggs on Sunday around 7am.

Samantha Charlesworth, who is originally from England, was last seen at around 6am on Thursday in Glasgow.

Samantha Charlesworth, who is originally from England, was last seen at around 6am on Thursday in Glasgow.

Alice Mitchell was last seen around 11pm on Monday in the Forrit Brae area of Bucksburn.

David Simpson was last seen in the St Leonard Street area of Lanark.

Alice Mitchell was picked up on CCTV in the early hours of Tuesday morning.

Alice Mitchell was picked up on CCTV in the early hours of Tuesday morning.

Investigations have suggested that Darren Pollock may have gone into Pollok Park on the day of his disappearance.

Investigations have suggested that Darren Pollock may have gone into Pollok Park on the day of his disappearance.