Oxford tent death sparks chemical alert Published duration 8 December 2013

image caption An area of Port Meadow has been cordoned off

Chemical and radiation experts were called in after the unexplained death of a man found inside a tent.

A passer-by discovered the body while walking in the Port Meadow area of Wolvercote, Oxford, at about 12:25 GMT.

A strong chemical odour prompted the area to be cordoned off and specially-trained officers to be brought in.

Thames Valley Police said it was likely the chemical was hydrogen sulphide, which can be fatal within minutes if breathed in.

Members of the public were warned to avoid the cordoned-off area.

A number of local footpaths have also been closed.

Police said although the man's death was being treated as unexplained, there appeared to be no suspicious circumstances.