UPDATE 4pm: POLICE have called off the search for the body of missing teen Duncan Wilmott who it is feared has drowned at a popular water hole near Collingwood Park.
Police divers spent the day searching a water-filled former mine where the teen (pictured) was last seen after he jumped into the water, resurfaced but went back under again.
Senior Sergeant Paul Andrews told the QT police hold grave fears for the teen, but conceded they have now moved from a search operation into a recovery phase.
Sgt Andrews said the search would resume on Wednesday morning.
UPDATE 10am: SENIOR Sergeant Paul Andrews said divers have been faced with difficult conditions in the search for a missing teen feared drowned in Aqua Lake.
He said the quarry was about 80m deep in parts and was littered with debris such as boulders, cars and trees.
Sgt Andrews said the family of the missing teen, Duncan Wilmott, were onsite and understandably grief-stricken.
He said the tragedy was one which could have been avoided and urged people not to swim or take risks at the numerous disused quarries across the region.
Police are using sonar equipment to search for the missing teen.
UPDATE 9am: POLICE divers resumed their search for a missing teen who is feared drowned.
The search has moved into a recovery phase.
Duncan Wilmott, 16, went missing yesterday after jumping off a steep ledge about 5m high at Aqua Lake - a former mine filled with water on private property.
The alarm was sounded about 10.45am after Mr Wilmott jumped into the water, resurfaced, then went back under the water.
It is understood the teen was about to start his senior year at Ipswich State High School tomorrow.
Police will be holding a press conference this morning to provide an update on the search for the missing teen.
EARLIER: A 16-YEAR-BOY is feared drowned after disappearing below the surface of a popular Collingwood Park swimming hole.
Police said the boy went missing after jumping off a steep ledge, about 5m high, at Aqua Lake - a former mine filled with water on private property.
The alarm was sounded about 10.45am yesterday, after the boy jumped into the water, resurfaced, then went back under the water.
Five Queensland Fire and Emergency Service units attended, with several swift water rescue technicians joining the search.
The Rescue 500 chopper was also called to the area.
Later, police divers were called to the scene to search below the surface.
A QFES spokeswoman said the swift water technicians were assisting police divers.
Members of the boys family were at the lake during the search yesterday.
Aqua Lake and the nearby Blue Lake are both popular with local children - especially during summer holidays.
Even while the search for the missing boy was taking place, other large groups of children could be seen swimming in the other lake nearby.
In December, 2009, a 22-year-old Sudanese man drowned after he jumped into a lake in the same area.
Police asked members of the public to avoid the area while their divers and other agencies conduct the search.
Officers are also advising members of the public to avoid trespassing on private property and swimming in unpatrolled and unsecure areas like those in the area where the boy is missing.