Emergency services are continuing their search for a missing “high risk” man who disappeared from his Blairgowrie home in the early hours of Friday.
Fire crews focused their hunt for Lee Brown on the River Ericht on Saturday night.
The 34-year-old, who uses a walking stick, has been described by police as vulnerable.
Saturday’s search, involving two fire and rescue service boats, followed a possible sighting by a member of the public.
A playpark at the riverside was taped off and used as a base of operations by firefighters.
Friends, relatives and members of the public also joined the search.
A helicopter was seen circling the Ericht earlier in the day.
Lee is described as white, 5ft 10in with short brown hair. When last seen at 1.45am, he was wearing a three-quarter length camouflage jacket, tracksuit bottoms and a blue, cream hat.
Anyone with information about his whereabouts has been urged to call Police Scotland on 101, quoting incident number PS-20181130-1897.