Gagane Chor pani gathyo KATHMANDU, April 26 - Plainclothes policemen arrested student leader (F**K)Gagan Thapa, along with Sandesh Adhikari and Subodh Acharya, Tuesday morning. Thapa, former general secretary of the Nepali Congress-affiliated Nepal Students? Union, and the two student leaders were arrested from Lainchaur today.