Egyptian authorities have detained a suspect in last week's London suicide bombings that killed at least 54 people.
An Interior Ministry statement says police in Cairo picked up Magdy Elnashar, a 33-year-old U.S.-trained North Carolina State University chemist believed involved in the attacks. It said he told authorities he is Egypt on vacation and denied any link to the attacks.
In London, British police said they are aware of the detention, but did not elaborate.
Earlier, officials said homemade bombs may have been used in the attacks, rather than the high-grade explosives previously indicated. A search of the home of one of the bombers found evidence of an explosive like that used by al-Qaida "shoe
bomber" Richard Reid when he tried to blow up an airliner in late 2001.
Meanwhile, British officials continue to search for a British-born man of Pakistani descent considered the possible mastermind of the attacks
Information for this report is provided by AP, AFP and Reuters.