A 17-year-old boy is feared dead after swimming in a quarry lagoon during the heatwave.
The youngster got into difficulty in Shavers End Quarry, near Stourport-on-Severn, Worcs., yesterday afternoon.
It is believed he was there with three teenage friends, who survived the ordeal.
A specialist diving team has been dispatched to search for a possible body.
A spokeswoman for West Mercia Police said: "At 4.45pm yesterday afternoon (Wednesday 12 August) police were informed an 17-year-old boy had gone into the water at Shavers End Quarry in Dunley, near Stourport.
"Emergency services attended and carried out a search of the lake, searches will continue today. A cordon is currently in place to allow emergency services to deal with the incident."
The boy's family is being supported by officers.
Detective Inspector Justin Taylor said: “We’re supporting the boy’s family as our searches of the lake continue."
The water - dubbed the blue lagoon - is a tragic blackspot with deaths reported there each summer.
An inquest this year heard Jayden Clarke, 18, accessed the lagoon through an unlocked gate in July 2018.
He hit his head on rocks after struggling in the water, the coroner heard.
