A student Islamic society has said sorry over the link to its Facebook site to a video claiming the killing of soldier Lee Rigby in Woolwich was “a government hoax”.

London Met University’s student-run Islamic Society, which has a Muslim prayer room at the City campus’s Calcutta House in Old Castle Street in Whitechapel, has removed the link from the site.

A six-minute clip on YouTube showing the suspects involved in last month’s stabbing of the 25-year-old Army drummer had added captions alleging conspiracy and claiming he may not even have died.

The video, viewed by 300,000 people, was linked “by an individual” to the Islamic Society’s Facebook page showing one of the suspects before police arrived, with a caption asking: “Where is the blood on his hands that is seen on most of the other videos?”

It then shows a journalist describing the incident with a derogatory caption, while claimed the reporter’s account was “fabricated.”

“Links to the videos were posted on the society’s Facebook site by an individual user,” a students’ union statement said this-afternoon.

“We want to make it clear that the views on the YouTube videos don’t represent the views of the union or its Islamic society.

“We apologise for the offence this has caused.”

The link was removed on Friday, it said. Both organisations condemned “in the strongest possible terms” the events in Woolwich in which Lee Rigby was killed.

Mystery surrounds who was responsible for the derogatory subtitles which also claimed the crime scene was covered in “fake blood”.

The Student Rights anti-extremism think-tank, meanwhile, has urged university authorities to be aware of “this kind of activity” where extremists get access to mass social media.