A 20-year-old man was Friday arrested on suspicion of having items likely to be of use to a terrorist, Scotland Yard said. The man was held in Sheffield, northern England, this morning, by officers from Scotland Yard's Anti-Terrorist Branch and officers from South Yorkshire police. A Scotland Yard spokesman said the arrest was in connection with an investigation into suspected terrorist activity overseas. Police are still searching the house in Sheffield where the man was arrested. He was taken to a police station in South Yorkshire, northern England, where he was being interviewed by senior anti-terror detectives. The Scotland Yard spokesman added that the arrest was part of an investigation into alleged activities in south-east Asia. "It is not connected to the ongoing inquiry into the suicide bombings on the London transport system on July 7 last year," the spokesman concluded. No further details were available.