A 25-year-old Indian-American engineering student has been sentenced to life in prison by a US court for fatally stabbing his friend after allegedly finding him cheating with his girlfriend. Rahul Gupta, a George Washington University graduate student, changed his narrative several times in court, but he did acknowledge that he killed his friend Mark Waugh, 24. On October 13, 2013, Gupta, his girlfriend and Waugh went to the Indian-American’s high-rise apartment in Silver Spring, a suburb of Washington, DC, where he caught Waugh cheating with his girlfriend. Waugh died after being stabbed and slashed 11 times inside the apartment.