London (CNN)Police officers Tasered and arrested a man inside the entrance to the grounds of the UK's Houses of Parliament in Westminster on Tuesday.
Armed police Taser and arrest man at UK Parliament
London's Metropolitan Police confirmed in a statement that the man was "detained and arrested by Carriage Gates inside the Palace of Westminster on suspicion of trespassing at a protected site."
The statement added that the incident happened around 11:55 a.m. in the British capital.
According to the UK Press Association, around a dozen officers "swarmed" around the man, who was then held against a fence.
"A Taser was deployed," the police statement said, adding that "enquiries into the circumstances continue."
A CNN producer on the scene saw the man put into a police van following the disturbance.
It's the same location where in 2017 Khalid Masood fatally stabbed 48-year-old police veteran Keith Palmer during a rampage that left four others dead.
Prior to the stabbing, Masood had rammed a rental car onto the sidewalk of Westminster Bridge targeting pedestrians.
Since the 2017 attack, a barrier has been built to protect those walking across the bridge and armed police have been stationed outside the Houses of Parliament permanently.