More time to quiz bomber's widow

Imran Motala is among the four arrested on Wednesday

Police have been given more time to question four people arrested in connection with the 7 July bombings, including a wife of one of the bombers.

Hasni Patel, 29, the widow of Mohammed Sidique Khan, her brother Arshad Patel, 30, and Khalid Khaliq, 34 and Imran Motala, 22, were arrested on Wednesday.

They are being held in London on suspicion of commissioning, preparing or instigating acts of terrorism.

The four are now able to be held until 16 May, Scotland Yard said.

'Co-operation'

Police have searched seven addresses in the West Midlands and West Yorkshire.

Properties in Dewsbury, Batley, Beeston in south Leeds, and Birmingham have been cordoned off for forensic investigation.

Mohammad Sidique Khan bombed a Tube train at Edgware Road

The arrests on Wednesday morning followed an intelligence-led operation involving Scotland Yard's counter-terrorism command and units in West Yorkshire and the West Midlands.

Earlier, Suresh Grover, who has represented Ms Patel since 2005, said he was "shocked and outraged" at the arrests.

"Hasina and her family have co-operated with the police, intelligence services, with the coroner, they have been in regular contact with everyone," he said.

Ms Patel's husband, Mohammed Sidique Khan, is seen as the ringleader behind the attacks.

Khan, 30, killed six people when he bombed a train near Edgware Road station.

A train travelling between King's Cross and Russell Square was also bombed, as was a double-decker bus in Tavistock Square

Mr Khaliq is from Tempest Road in Beeston - the street where 7 July Aldgate Tube bomber Shehzad Tanweer lived.

Tanweer was one of four suicide bombers to mount the co-ordinated attacks in the capital nearly two years ago, which killed 52 people and injured more than 750.