Seven others who were injured have been sent to Putrajaya Hospital and Serdang Hospital for treatment.

Eight others were injured, two of them seriously.

The visitors were trapped for 'nearly 10 hours' after the system was paralysed due to an electrical problem.

Defence Minister Mohamad Hasan says the investigation will be carried out in detail.

The case has been handed over to the police for investigation.

The collapse took out four traffic lanes along an elevated section of the heavily travelled Interstate 95, though no injuries were immediately reported.

Carriages had flipped over entirely and rescue workers searched to pull out survivors trapped in the mangled wreckage, with scores of bodies laid out under white sheets beside the tracks.

Thick black smoke and flames can be seen billowing from the building in Jalan Gasing.

The school bus carrying 45 students overturned after being hit from behind by a truck in Eynesbury, about 40km west of state capital Melbourne.

Without earnest self-reflection, it will be difficult to set in motion a roadmap to avoid a replay of senseless tragedies such as the recent drowning of a four-year-old child.

Renner has said he was driving the plow after using it to pull one of the family's trucks out of the snow and onto pavement.

At least 19 have been taken to hospital.