Coastguards
called off the search just before 6.30 pm after no trace of
the person was found.
Carnoustie coastguards however, scoured the shoreline after
the tide had receded, and also checked to see if any vehicles
had been left unattended in coastal car parks in both
Carnoustie and Monifieth.
The three boys Jamie Williams (12) and Darren Halley (11),
both Carnoustie, and Ian Dunlop (11), from Lochgilphead, said
they were convinced they had seen someone waving their arms in
the water.
Lindsay Martin, station officer for HM Coastguard
Carnoustie said, "We were over the area where the boys
said they saw a person within about three minutes of receiving
the call.
"Our boat was launched within a matter of minutes and
we also searched the foreshore using our quad vehicle. We can
do a search of the dunes and along the edge of the golf course
very quickly using this vehicle.
"The whole operation involved a very thorough search
with the lifeboats from Arbroath and Broughty Ferry, our boat,
the yacht club boat, the pilot cutter and the helicopter from
Boulmer.
"It is disappointing that we did not find anyone and
we will now have to wait and see whether anyone is reported
missing.
"The boys were convinced they saw a person in the
water and they were very prompt in raising the alarm," he
added.