Chennai: Two mechanics of the Metropolitan Transport Corporation died on the spot and six of their colleagues were injured when an MTC bus rammed the wall of the room they were resting in here early on Sunday, police said.The incident occurred at around 12.45 AM at the bus depot in Vadapalani area when the six mechanical engineers of the Corporation were sleeping in the building, they said. Two of them, Bharati (32) and Sekar (48) died on the spot, while the others were admitted to the Government Also Read – Uddhav bats for ‘Sena CM’Kilpauk Medical College Hospital. The bus driver, who escaped unhurt, has been arrested, police said. Transport department principal secretary J Radhakrishnan visited the area and took stock of the incident. He also visited the injured at the hospital. Later, speaking to reporters, he said it was too early to arrive at a conclusion on the reasons for the accident. “I was told the bus driver is an experienced man”, he said.