Air Canada jet's parts fall from sky after engine failure [PICS]

The investigation continues into an air scare over Canada, as pieces of a commercial jet reportedly fell from the sky.

Witnesses said they heard a loud boom and saw pieces of an Air Canada Boeing 777 rain down on cars in Toronto near Pearson International Airport.

A car's rear window was smashed after parts from an Air Canada jet tumbled

from the sky following engine failure.

Most of the chunks were about the size of a cellphone. Witnesses said they were initially too hot to touch and smelled like jet fuel.

The plane took off for Tokyo but returned to the airport after an engine shut down. No one was injured.

An Air Canada jet bound for Japan made an emergency landing in Toronto on Monday afternoon when an engine shut down shortly after takeoff. No injuries were reported.