CBSE got a tip-off about the paper leak. So why weren't exams scrapped and postponed; 18 students, 5 tutors questioned as police tries to track down source of the leak, fresh exam dates to be announced by the weekend; A steep rise in communal violence in West Bengal since 2012, a special report from Asansol; As Supreme Court's Cauvery deadline expires and Centre seeks clarification, Tamil Nadu cries foul, says its a delaying tatic; ISRO successfully launches GSAT-6A communications satellite, one that's crucial for the armed forces; all this and much more in today's news wrap.