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Shocking footage showing a couple appearing to have sex in the centre circle of Charlton Athletic's football pitch has gone viral.

A Vine video uploaded yesterday claims the randy duo 'broke into' The Valley football stadium in London in the early hours.

Revealed: Why couple 'had sex on Charlton Athletic's pitch' - watch full unedited video

It is unclear who the couple are or when the video was taken, but user Showboat Vines posted the clip online.

A caption posted alongside the footage read: "Someone broke into The Valley (home of Charlton) and did this in the centre circle! #SextraTime."

The man behind Showboat Vines today told the Mirror: "I can't say where I got the footage from (I'm sure you understand) but it's genuine."

He claimed the footage, which has been viewed over one million times on Vine already, was shot on Tuesday night.

Charlton officials said they were investigating the footage as a matter of urgency.

The club are currently 16th in the Football League Championship and host Huddersfield Town on Saturday.

* Do you know who the people in the video are? Call us on 0800 282 591 or email mirrornews@mirror.co.uk