A junior colleague held for allegedly killing an employee of an IT consulting services company in Nagpur has told the police that he was enraged after his senior commented about his performance at work, an official said on Sunday.

The victim, identified as L Devanathan Lakshminarasimhan (21), was working as an assistant manager with Hexaware Technologies in MIHAN (Multi-Modal International Cargo Hub and Airport at Nagpur) for the last ten months, the Nagpur police had said earlier.