Pakistani police arrested five suspected militants and seized a huge cache of arms and ammunitions here yesterday and averted a major sectarian attack, sources said. The militants were allegedly involved in the killing of 25 people in sectarian violence in the port city of Karachi. Raja Omar Khitab, deputy superintendent of police in Karachi, said the men allegedly belonged to little known group called Baqiyatullah. The group was described as a youth wing of the outlawed Shiite group, Tehrik-e-Jafferia Pakistan (TJP).Another high-ranking police official Dost Ali Baloch confirmed the arrests and identified the militants as Muzaffar Ali, Azhar Hussain, Shujaat Ali, Raza Ali and Mustafa Kirmani were arrested in two raids in the city. A large quantity of arms and ammunition including 40 hand grenades, five Russian-made bombs, 10 RPG rifles, eight AK-47 rifles and 1,500 rounds of ammunition were discovered, Baloch said. "They were planning some big sectarian attack somewhere in the country," Baloch said.