Responding to the state-appointed Committee of Inquiry (COI), 55-year-old Lee Kim Huat said his first thought was that Sakthivel Kumaravelu was already dead.
"To my mind, since a big vehicle went over him, he must have been dead," The Straits Times quoted Lee as telling the COI yesterday when asked whether moving the bus might have saved Sakthivel's life.
Lee told the COI, chaired by former Supreme Court Judge G Pannir Selvam, that he was "not supposed to move anything" after a collision.
Footage shot by the bus' closed-circuit television (CCTV) showed Lee was the third person to alight the bus and squatting down with several others to look at Sakthivel's body pinned beneath the undercarriage on the night of December 8.
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Lee was also asked why he had not turned on the monitors for his four bus camera feeds, which would have shown Sakthivel, 33, running alongside the bus while it was moving.
"Even if it were on, I don't think I could have seen him because of the poor lighting of the road lights and the lamp posts," said Lee.
The four-man COI chairman Selvam countered: "But we can see it very clearly on the screen, there's no lighting problem."
Lee replied that his attention was focused on the people walking around. "Safety was the primary concern and the front was more important."
Lee was also shown a 30-second CCTV clip in which Sakthivel could be seen walking beside the bus, lagging behind as it sped up, before catching up and falling into its path as it turned.
Earlier, the Attorney General Chambers had cleared Lee of any responsibility in the fatal accident.
The COI public hearing continues today into the riot in which 49 police and Home team officers were injured and more than 650,000 dollars worth of government property was damaged.
A total of 117 witnesses are expected to be called to testify at the hearing expected to last over six weeks.