An eyewitness posted this image of the scene in Edmonton (Twitter/Redbutdred

A 25-year-old man has been arrested after a woman was discovered beheaded at an address in Edmonton, north London.

A firearms officer was injured as police arrested the man near the scene of the alleged murder at an address on Nightingale Road.

Police rushed to the address at 1.07pm today to reports a man was armed with a knife.

There they found a woman's body collapsed in the back garden of the home and was pronounced dead at the scene.

The detained man was arrested near the scene of the incident on suspicion of murder after being tasered by firearms officers. The suspect is now in police custody and investogators are not looking for anyone else in connection with the death.

Scotland Yard has downplayed suggestions the attack was an act of terrorism and said the death is being investigated by homicide detectives.

A statement from DCI John Sandlin said: "This was a highly visible attack in broad daylight on a residential street.

"I can understand why this may cause people concern, however we are confident that we are not looking for anyone else at this stage.

"Whilst it is too early to speculate on what the motive behind this attack was, I am confident, based on the information currently available to me, that it is not terrorist-related.

"Local officers and specialist detectives are at the scene and will remain there for many hours to come.

"Specially trained family liaison officers will be deployed to support the family; we request that their privacy is respected at this very difficult time."