Lucknow (Uttar Pradesh) [India], June 22 : The death toll in the Lucknow coaching institute fire in the Aliganj area on Monday rose to 15, with medical experts stating that most of the deaths in the incident were caused by suffocation.   Speaking to ANI, Prem Raj Singh, MS King George Medical University (KGMU) said, "15 people were already dead when they were brought to the hospital. The bodies have been sent to the mortuary for post-mortem.