A Manipuri pursuing his PhD was found dead, lying in a pool of blood with his throat slit at his residence here, police said Thursday.Zingran Kengoo, 33, a PhD scholar from Mumbai's Tata Institute of Social Sciences (TISS), was found murdered Wednesday night at his Kotla residence in south Delhi.According to police officials, Kengoo's body was found lying in a pool of blood with his throat slit, by his house owner's brother around 9.30 p.m. Wednesday. He alerted the police.Officials said a knife was recovered from the victim's room, while his belongings were left untouched.Kengoo, who hailed from Manipur, had started living in the national capital about a month back.