Demanding improvement in college infrastructure, student leaders of DAV (PG) College, staged a protest under the banner of Chhatra Sangharsh Samiti outside Principal Devendra Bhasin’s office confining him inside for some time on Monday.The protesters submitted a memorandum addressed to college management committee secretary through Bhasin.However, the College Principal denied having been confined to his cabin by protesting students. He said that their demands will be addressed.