TORONTO - Toronto police are appealing for witnesses as they investigate the death of a young man who fell from a parade float at the city's Caribbean Carnival.

The 18-year-old had been riding on the float Saturday night when he fell and was run over by the vehicle just before 9 p.m.

Police say the young man suffered life-threatening injuries and was rushed to hospital, where he later died.

On Sunday police identified the man as Rueshad Grant.

Officials are examining a video posted on the Internet which appears to show the immediate aftermath of the incident.

The clip appears to show confusion on the crowded parade route, with the crowd yelling for the float to stop as it slowly starts moving after a brief pause.

Organizers of the parade are expressing their "heartfelt sympathies" to those who knew the young man.

"We are deeply saddened by this loss," spokeswoman Denise Herrera-Jackson said in a statement.

"The Toronto police are conducting a full and thorough investigation and we will assist them in any way we can."

An autopsy was set to take place Sunday.

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  • Toronto Mayor Rob Ford shows up an hour late, missing the ribbon cutting ceremony, as he briefly dances with paraders at the The Scotiabank Toronto Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • Paraders march down Lakeshore Boulevard at the Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • A parader checks her reflection during the Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • A parader checks on her jewels during the Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • A parader breaks to talk on her cellphone during the Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • A parader marches out of the judging area at the Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • Participants dance in front of judges at the Scotiabank Toronto Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • Paraders break for lunch as they ride on the back of a truck along the parade route at the Scotiabank Toronto Caribbean Carnival in Toronto on Saturday, August 3, 2013.

  • Paraders break for lunch along the parade route at the Caribbean Carnival in Toronto on Saturday, August 3, 2013.