Four-men sentenced to death for the 2012-gang-rape and murder of a young-medical-student in Delhi will hang at 7-am on January-22, a court declared today, putting out a death warrant in the case that scarred India. Mukesh Singh, 32, Pawan Gupta, 25, Vinay Sharma, 26, and Akshay Kumar Singh, 31, will be executed together at Tihar jail, where officials had started preparing a month ago.