Police rushed to a London Underground station tonight just hours after a terrorist attack in Westminster.

Crowds gathered outside Kennington station with around a dozen police cars parked outside.

It emerged that they were called to reports of a stabbing.

Crowds are building outside Kennington Underground Station after 'a dozen' police cars rushed to the area earlier tonight

A police spokesperson said: 'Police were called at 19:08hrs on Wednesday, 22 March to Kennington Underground Station.

'It was reported that youths were fighting at the location and a youth had been stabbed. Officers attended and did not find anyone injured or any disturbance.'

Police said no arrests have been made and enquiries continue.

It was feared that the high police presence was linked to the fatal stabbing of a police officer outside Parliament this afternoon.

The nature of the incident is unknown and it is not clear if it is linked to the earlier terror attack in Westminster today

One Twitter user said: 'Just now at Kennington station, police and ambulance in force, seem to still be looking for someone.'

Another tweeted: 'Police cars and ambulances are swarming Kennington right now. Sat on a bus outside.'

It is also unknown whether the tube station has been closed.

MailOnline has contacted the Met Police and Transport for London for comment.