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UK: Manchester attack investigation still at 'full tilt'

UK: Manchester attack investigation still at 'full tilt'

LONDON - British police made another arrest and stormed another house Sunday as they hunted for suspects in the Manchester bombing, while a government minister said members of attacker Salman Abedi's network may still be at large.

"The operation is still at full tilt", she said.

Earlier Sunday local time, tens of thousands of runners pounded the streets of Manchester in an annual fun run that became a symbol for unity and defiance.

They said the investigation - which was "making good progress" - had around 1000 people working on it and hundreds more officers involved in security across Greater Manchester.

A minute's silence is held to commemorate those who were killed in the suicide bombing at a stadium in Manchester last week.

The arrests bring to 11 the number of suspects held in Britain over Monday's blast at a concert by USA pop idol Ariana Grande, in which 22 people died and 116 were injured and for which the Islamic State group has claimed responsibility. Two were released without charge, while 14 men remained in custody for questioning, the police said.

Police have released surveillance-camera images of Abedi on the night of the attack that show him dressed in sneakers, jeans, a dark jacket and a baseball cap.

The suspects in custody include Abedi's elder brother Ismail, as well as their father, Ramadan, and another brother who was detained in Libya.

"What we do know, in engaging with the intelligence services and with the police and with the Border Force, we make sure that they have the tools to track them and to keep them out where we can", Rudd said of those who may have be aiming to return to Britain.

On Saturday night, police issued CCTV stills of Abedi, bespectacled and casually clothed, in a plea for information about his movements between May 18 and the attack. The straps of a knapsack are visible on his shoulders.

Still, security remains high at large-scale public events, including the Great Manchester Run.

His city centre flat was one of the last places he went - and where he may have made the final touches to his explosive device - before going to the arena, police have said.

"I would not rush to conclusions ... that they have somehow missed something", Rudd said.

A Whitehall official said previously that Abedi was one of a "pool" of former subjects of interest whose risk remained "subject to review" by the security service and its partners.

When asked how many potential militants the government was anxious about, Rudd said the security services were looking at 500 different potential plots, involving 3,000 people as a "top list", with a further 20,000 beneath that.