There must be "no place for terrorists to hide" and intelligence services must have access to encrypted messaging services, the home secretary has said.

Axar.az reports that it comes after it emerged that Khalid Masood was reportedly on the messaging app WhatsApp two minutes before an attack in Westminster in which he killed four people.
Police are unable to read his messages.

But labour leader Jeremy Corbyn said there was a balance between the "right to know" and "the right to privacy".
Amber Rudd said she would be asking tech firms to "work with us" when she meets with them this week.
Speaking to BBC One's Andrew Marr programme, Ms Rudd said: "We need to make sure our intelligence services have the ability to get into situations like encrypted WhatsApp."

Encryption is a way of scrambling computer data so it can only be read by the people you want to see it.
All messages sent on WhatsApp have end-to-end encryption.

This means messages are unreadable if they are intercepted by anyone, including law enforcement.
The Facebook-owned company, which has a billion users worldwide, has said protecting private communication was one of its "core beliefs".