The unknown man who had handcuffed himself to the gates of Buckingham Palace was taken into custody, according to the local media.
The news of the incident was shared on Twitter by The City of Westminster Police.
“At around 17:23hrs [5:23 p.m. local time] a man approached the gates of #BuckinghamPalace & handcuffed himself to them. Officers in the area immediately approached the man, believed aged in his 30s, who began threatening to harm himself,” said the statement.
"LAS [London Ambulance Service] are also on scene. Police are trying to speak to the man & bring the situation to a swift conclusion to ensure his safety and welfare," officials continued.
Police said the man, believed to be in his 30s, approached the gates at around 5.23pm on Thursday.
A Metropolitan Police spokesperson said he had sustained "a number of self-inflicted slash injuries".
Officers spoke to him to "bring the situation to a swift conclusion to ensure his safety and welfare".
The London Ambulance Service was also called to the scene.
Police said on Friday the man was taken to a south London hospital to be assessed before being taken into custody.
Owen Wilson likely to follow in Jennifer Aniston’s career footsteps
Selena Gomez, Benny Blanco are gearing up to release their joint album 'I Said I Love You First' in March
A$AP Rocky, Rihanna share two sons RZA and Riot
Jason Kelce says younger brother Travis didn't even have couches in his house before Taylor, only a pool table
Prince Andrew faces uncertain future at Royal Lodge as 65th birthday looms
Travis Kelce and Taylor Swift’s next plans revealed as they navigate ‘new phase’ in relationship