Liverpool Women’s hospital blast: police name man killed in explosion as terror threat raised to severe – live

Police say Emad Al Swealmeen was man killed in blast on Sunday; UK terror threat level increased to severe, meaning attack is highly likely'

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Assistant Chief Constable Russ Jackson, from counter-terrorism policing north-west, said the arrested men were believed to be associates" of the taxi passenger, PA Media reports.

He said officers were looking at his associates, his telephone records and purchases he may have made.

He said police had attributed" the taxi passenger to both the addresses where officers were currently searching but were uncertain which address he lived at.

We have got significant items in one of the addresses," Jackson said.

Here's the full report on what we know about the situation so far, from three Guardian reporters, Jamie Grierson, Vikram Dodd and Maya Wolfe-Robinson.

The piece will continue to be updated throughout the day.