Ph.D. and Engineering students of Kakatiya University (KU) in Warangal, clashed on the university premises,leading to several students being injured. Two of them were admitted to the local hospital in serious condition. It all started with Ph.D. students staging protests for the past 15 days, against alleged irregularities in admissions. They said that some students and professors colluded in giving admissions. Today they urged engineering students to join them in a bandh call. As the latter refused, a clash ensued between them, leading to a tense situation in the campus.