Security forces on Wednesday arrested seven militants, including a senior Al Qaeda operative allegedly wanted in connection with the July 7 attacks on London, a senior security official said. Security forces arrested the suspects in a raid against a militant den in the northwestern city of Peshawar on Wednesday morning, the official told a foreign news agency on condition of anonymity. The official named the Al-Qaeda operative wanted for the July 7, 2005 suicide bombings in London as Zabi ul Taifi, an Arab. "He''s been arrested in Peshawar this morning," the security official said.