They also claimed to have seen fire trucks at the scene.
A spokesperson for South East Coast Ambulance Service said: “We were called at 7.42am this morning to a serious incident at Pencester Gardens in Dover.
“We immediately dispatched a number of clinical resources to the scene, including our Hart team and critical care paramedics; however, sadly, a teenage boy was pronounced as deceased at the scene.”
A Kent Police spokesman added: “Kent Police was called by South East Coast Ambulance Service to Pencester Gardens, Dover, at 7.45am on Wednesday 3 August 2022.
“No suspicious circumstances have been reported, and the Health and Safety Executive have been informed.”