Terror manhunt after Tube bomb at Parsons Green (London)

Armed police search home over Tube bombing

Armed police have evacuated and are searching a house in Sunbury, Surrey, in connection with Friday's attack on a London Tube train.  It follows the arrest of an 18-year-old man on suspicion of a terror offence.

The arrest is "significant" but the terror threat level remains at "critical", Home Secretary Amber Rudd said.  The man was held in Dover on Saturday and taken to a Kent police station - he will be moved to south London later.

Thirty people were injured after the explosion on a train at Parsons Green.

In Sunbury, residents near to the address have been told to leave their homes and cordons are in place at a 100-metre radius to the property.  Ms Rudd chaired a meeting of the government's Cobra emergency committee and it concluded the UK terrorist threat level should remain at "critical".  After the meeting, she said it was "much too early" to say whether those behind the attack were known to authorities, adding: "The operation is ongoing".