ULFA was planning serial bombings in the city from March 10. This startling revelation was made by ULFA leader Champak Sarma who was arrested on Tuesday in front of the Cotton College. Champak was on his way to collect cash from the proprietor of the Wintdrop Hospital Dr Tridip Baruah showing a letter on the pad of ULFA’s 29th battalion commander Bosa Singh. Champak is an inhabitant of Baruahbari gaon under Kamalpur police station in Kamrup district. The police further conducted a raid at Champak’s rented room and recovered a huge cache of explosive materials. Police have claimed that these explosive materials were kept for the March 10 serial bombings in the city.