PRAYAGRAJ, March 5 -- A students of class 9 hanged himself following a quarrel with his sister in a village under Sandipan Ghat police station in Kaushambi district on Tuesday morning. Upon receiving information about her brother's death, his sister also attempted suicide by slitting her throat with a knife. She was immediately admitted to Swaroop Rani Nehru Hospital (SRNH)in Prayagraj in a critical condition....