POLICE have issued a warning a group of youths were spotted jumping from a bridge into a reservoir.

Mid Sussex Police reminded the public that while reservoirs may look appealing during spells of warm weather, they can be dangerous.

“We have received reports of groups of youths jumping from what is known as Platts Bridge into the reservoir at Ardingly, Haywards Heath,” a police spokesman said.

“Jumping off bridges and swimming in reservoirs is strictly prohibited.

“Reservoirs may look like the perfect place to cool off during spells of hot weather, but they can be full of concealed dangers.

The Argus: Police warning after youths jump from bridge into Ardingly reservoir Police warning after youths jump from bridge into Ardingly reservoir

“They are not lakes, the water depth and temperature quickly changes. Keep your family and friends safe this summer.”

Earlier this year, a warning was issued about the dangers of tombstoning.

Tombstoning is the action of jumping or diving from a height into water.

East Sussex Fire and Rescue Service issued a warning about the “hidden dangers” to those considering taking part in the dangerous activity.

“Water depths change, there could be hidden debris. And jumping into water can cause cold water shock.

“Every year people need rescuing, suffer serious injuries or even die. Keep yourself and your mates safe. Don’t jump into the unknown.”

A previous statement released by the coastguard said: “We cannot over emphasise how dangerous it can be to, quite literally, jump into the unknown.

"You can never tell what is hidden from view under the sea’s surface.

"Not only hidden rocks, but also other objects could be floating below the surface or on the seabed.

"Just the impact with the water from enough height can cause."