London bomb suspects: key facts

The police have revealed important new developments in the hunt for those responsible for the London bomb attacks.

• All four suspects were British nationals of Pakistani descent. Three of the four were from West Yorkshire


• All four were captured on CCTV at King's Cross station, wearing rucksacks, shortly before 0830 BST on the morning of the attacks. The footage was found on Monday night


• One suspect was reported missing by his family. Some of his belongings were found on the bombed Number 30 bus in Tavistock Square


• Property linked to a second man was found at the scene of the Aldgate/Liverpool Street Tube bomb


• Items belonging to a third suspect were found at the site of the Aldgate/Liverpool Street and Edgware Road Tube bombs


• It is very likely the three men whose belongings were found at the bomb scenes are dead, police sources say


• Questions remain over the identity of the fourth bomber. Police do not know if he was killed at King's Cross or has fled


• One man has been arrested in West Yorkshire and is being questioned in London. He is believed to be related to one of the suspected bombers


• Police have searched the homes of three of the four suspects in West Yorkshire


• Six search warrants were executed in the Leeds area on Tuesday. A controlled explosion was carried out in the Burley area


• A "significant amount" of explosive material was found at an address in Leeds


• The men boarded a Thameslink train from Luton to King's Cross. Two cars in Luton, one of which had explosives in it, are connected to the inquiry


• It is thought the cars were hired by the suspects in West Yorkshire before being driven to Luton


• More than 1,000 calls have been made by the public to an anti-terrorist hotline. Police have studied 2,500 CCTV tapes