The search at the lake, which is about five miles east of Birmingham city centre, is still ongoing, but police have not confirmed that anyone else is missing.
Police have confirmed that three boys, aged eight, ten, and eleven, died after falling through an icy lake in Solihull.
A fourth boy, aged six, was critically injured in the incident at Babbs Mill Park on Sunday afternoon.
Authorities have warned that the search is “no longer a search and rescue operation” after unconfirmed reports of up to six children falling in.
When rescuers rescued the four children, they were all in cardiac arrest.
They were taken to hospital but police said in an update that three of them “could not be revived”.
Reports from the scene and social media videos indicate they were playing on the ice and fell through, the fire service said.
Police officers were wading chest deep in the lake this morning, though they have not yet confirmed that anyone else is missing.
West Midlands Fire Service said police and members of the public were already trying to reach the children when they arrived on Sunday.
Emergency services entered the water and rescued the four children, with firefighters and ambulance staff giving them CPR.