United Kingdom police arrest 10 in London attack probe

British police are assuming that Khalid Masood, a 52-year-old British Muslim convert and the suspect in Wednesday's terror attack at the British Parliament of which four people were killed, acted alone.

Nine people are now in custody after a woman was released on bail.

The police said in a statement they had arrested 12 people since Wednesday's attack when British born Khalid Masood killed four people and was himself shot dead.

Detectives have searched 21 properties in London, Brighton, Wales, Manchester and the central English city of Birmingham in one of Britain's biggest counterterrorism operations in years.

A 26-year-old woman and three men aged 28, 27, and 26-years-old who were arrested at separate addresses in Birmingham were also all released with no further action.

The attack which occurred at 14:40:08 on Wednesday was by Masood in his auto that mounted the pavement over Westminster Bridge and it continued until 14:40:38 before crashing into the perimeter fence of the Palace of Westminster.

The attacker drove his auto into crowds of people on Westminster Bridge on Wednesday afternoon, killing three at the scene, before stabbing a police officer to death at the Parliament buildings.

The attack was the deadliest in Britain since 2005, when 52 people were killed by Islamist suicide bombers on London's public transport system.

"Nevertheless we are determined to understand if Masood was a lone actor inspired by terrorist propaganda or if others have encouraged, supported or directed him".

As part of their inquiry, police said they have seized 2,700 items, including "massive" amounts of computer data.

Basu added that we won't know why he committed the terrorist attacks. He was arrested in Birmingham by police officers who are also investigating.

Two people remain in custody for questioning, neither of whom have reportedly been charged or identified. Two police officers hurt in the attack are also in hospital with "significant injuries". He had several previous convictions for assaults and possession of offensive weapons.

A European government source familiar with the investigation said Masood's name had cropped up about five years ago on the margins of an MI5 counter-terrorism investigation but interest in him had swiftly dissipated.

"We must all accept there is a possibility we will never understand why he did this".

  • Salvatore Jensen