More on KentOnline
Police cordoned off a section of Lords Wood and Kent Air Ambulance landed near Ballens Road.
A police car and a dog unit were also at the scene at midday.
But all emergency crews have left the scene by 12.45pm.
Police confirmed a man collapsed with a heart attack in Ballans Road.
It is thought he was trimming a hedge.
He was taken by ambulance to hospital.