Anti-terrorist police are questioning six people in connection with a bomb attack in Tel Aviv, which is thought to have been carried out by two Britons. The three men and three women are being held at the high-security Paddington Green police station in central London, on suspicion of helping to plan bombing attacks. The arrests follow claims by Israeli police that Tuesday's bomb attack, which killed three people and injured more than 50, was carried out by two Britons - Asif Muhammad Hanif, 21, and Omar Khan Sharif, 27. Mr Hanif died in the explosion at Mike's Bar in Tel Aviv, while Mr Sharif is being hunted by Israeli police, who say he fled the bar after the bomb he was carrying failed to go off. **Phone Records*** The arrest of a man in London, in the early hours of Saturday morning, came after five people were arrested overnight in the East Midlands. Forensic scientists are searching their homes and examining computer and phone records. Unusually police will not confirm their addresses, or say whether any are related to either Mr Hanif or Mr Sharif. Security sources say the investigation is highly sensitive and "extremely important". The British investigation involves MI5, MI6, Scotland Yard's anti-terrorism branch, local police forces and international agencies. **'Most wanted'*** Pictures of Mr Sharif, who comes from Derby, have been widely printed by the Israeli media. There has been speculation that Israel's "most wanted man" is either in a safe house or has entered Palestinian territory. On Friday Chancellor Gordon Brown ordered the freezing of all UK accounts owned by Mr Sharif and Mr Hanif, from Hounslow in west London. And the BBC learned that the two men had been taught by a "spiritual leader" from north London. Sheikh Omar Bakri, of the fringe Muslim group al Muhajiroun, said the two men had come to him for instruction. **PHOTO CAPTION*** Mike's Bar in Tel Aviv after the explosion, (Reuters)