New arrest over Westminster terror attack

Govt eyes WhatsApp access over Masood

LONDON: British police investigating a deadly attack on parliament made a new arrest on Sunday as officials set their sights on accessing WhatsApp, the heavily encrypted messaging service that was used by the killer.

The arrest came four days after the lightning assault that unfolded in the shadow of the Houses of Parliament, in which an apparently lone attacker killed four people and wounded 50 before being shot dead by armed police.

The latest arrest was a 30-year-old man who was detained in the central city of Birmingham on suspicion of preparing terrorist acts, London’s Metropolitan Police said.

A dozen people have been arrested since Wednesday’s attack by 52-year-old Khalid Masood who deliberately ran down pedestrians on Westminster Bridge then stabbed a policeman just inside the gates of parliament.

Nine people have been released without charge, while a 58-year-old man remains in custody and a 32-year-old woman has been released on bail.

The arrest came as the government confirmed Masood had used the WhatsApp messaging service, saying it was crucial that the security services be allowed to access the heavily encrypted app.

Media reports said Masood used the Facebook-owned service just minutes before staging his assault, although it was unclear whether he sent any messages or just looked at the app.

Speaking to Sky News, Home Secretary Amber Rudd said it was “completely unacceptable” that police and security services had not been able to crack the service.

“You can’t have a situation where you have terrorists talking to each other — where this terrorist sent a WhatsApp message — and it can’t be accessed,” she said.

Although police believe Masood acted alone on the day, investigators are still trying to find out whether he was encouraged or directed by others.

“There should be no place for terrorists to hide,” Ms Rudd said in a separate interview with the BBC. “We need to make sure that organisations like WhatsApp — and there are plenty of others like that — don’t provide a secret place for terrorists to communicate with each other.”

WhatsApp said it was “horrified” by the attack and was working with the investigating authorities without saying whether it would change its encryption policy.

Ms Rudd acknowledged that end-to-end encryption was vital to cyber security, to ensure that business, banking and other transactions were safe — but said it must also be accessible. “It’s not incompatible. You can have a system whereby they can build it so that we can have access to it when it is absolutely necessary,” she told Sky News.

Ms Rudd said she did not yet intend to force the industry’s hand with new legislation, but would meet key players on Thursday to discuss this issue.