Three of the four July 21 would-be suicide bomb suspects are thought to be in custody this afternoon.
Two more arrests followed Wednesday’s detention of Yasin Hassan Omar, who is suspected of a failed attempt to blow up a Tube train at Warren Street station in central London last Thursday.
It was thought that a man who allegedly tried to blow up a Number 26 bus in Shoreditch, east London that day, and another said to have attempted to set off an explosion on a Tube train at Oval, south London, had also been held.
That left only the man who tried to explode a device on a Tube train at Shepherd’s Bush, west London, at large.
Only Omar and alleged attempted bus bomber Muktar Said-Ibrahim had been named as suspects.
Omar, 24, was felled with a Taser stun gun when officers stormed the house where he was hiding in Birmingham on Wednesday morning.
He and Said-Ibrahim were thought to have been staying at a flat on the ninth floor of a tower block in New Southgate, north London.