An axe-wielding man has been arrested near Buckingham Palace, police have said.
Armed Metropolitan Police officers were on patrol when they spotted the man, believed to be in his forties, walking on The Mall in central London holding the axe at around 6.30pm on Tuesday.
He was detained and arrested on suspicion of carrying an offensive weapon.
Photos from witnesses on Twitter appeared to show several officers surrounding the man near the Institute of Contemporary Arts building.
There are no reports of any injuries, according to the Met, and the man was taken to Charing Cross police station for questioning.
The force said inquiries are continuing but added the incident was not being treated as terror-related at this time.
Anyone with any information is urged to contact police on 101 or Tweet @MetCC quoting CAD 6041/13APR.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article