A man is missing at sea and five others have been pulled from the water close to Clacton Pier in Essex, the coastguard has said.
Emergency services have been called to the scene and a major search and rescue operation is underway to find the man after six people got into difficulty off the coast.
Nigel Brown, communications manager for Clacton Pier, said the current “dragged” a group towards the pier.
UK currently hotter than 98.8% of the planet – heatwave latest
Staff threw lifebelt rings over the side to help some of those in trouble, he said.
Mr Brown continued: “Eight of them were in the water but my understanding is four or five got into difficulty.
“My understanding is one person was missing.
Skeleton found alongside cowboy boots identified as missing man from 1990s
TOWIE star Yazmin Oukhellou recovering in hospital after car crash in Turkey that killed friend
‘Dangerous’ and violent man jailed for ‘most appalling campaign of abuse’ court had ever seen
“The group that were in the water were very worried about one person they couldn’t see and were saying, ‘There’s one missing’.
“As far as I know, that person’s still missing. They’ve had the helicopter up.”
Mr Brown said it was “difficult to tell their ages” but he believed some were in their late teens and early 20s and fully clothed.
Essex Police said: “We’re on the scene assisting emergency services colleagues with a serious and ongoing incident close to Clacton Pier.
“There is a significant emergency services presence in the area while the incident is being dealt with. We’ll provide an update as soon as we practically can.”
Read more: New UK record as temperature hits 40.2C – with 41C expected this afternoon
Why ‘tropical nights’ could be deadly
HM Coastguard said it was responding to “a report of multiple people in the water”.
A spokesman said: “HM Coastguard is currently responding to an incident at Clacton Pier following a report of multiple people in the water.
“Clacton beach patrol, the RNLI lifeboat from Clacton and Coastguard rescue teams from Clacton, Walton and Holbrook have been sent to help, as well as the Coastguard rescue helicopter from Lydd.
“Essex Police, Essex Fire Service and Essex Ambulance Service are also attending.
“Five people have been rescued, with the search still ongoing for a sixth man.”