Published: Apr 02, 2010 8:56 PM EDT

LAKE BUENA VISTA, Fla. - Emergency officials have released the name of the 9-year-old boy who was killed when he rode his bike into a Walt Disney World bus in Florida.

The Florida Highway Patrol has identified the boy as Chase Brubaker of St. Petersburg. Authorities say his bicycle veered off the sidewalk and hit the side of a passenger bus.

Investigators say he was then pulled under the right rear tire.

Authorities have also released a recording of a 911 call made moments after a 9-year-old boy was killed.

During the nine-minute recording, an unidentified woman tells  the dispatcher there is nothing that can be done to help save the child. He was declared dead at the scene.

Brubaker's family has contested the official account of the child's death, telling the St. Petersburg Times and The Tampa Tribune that an 11-year-old friend riding nearby said the boy's bike never left the sidewalk.