A federal investigator says a hospitalized driver is still too injured to talk about a tour bus crash that killed seven Chinese tourists and injured 10 others.

National Transportation Safety Board official Pete Kotowski also added an 11th person to the injury list — a motorcyclist who crashed when the bus overturned Friday on U.S. 93 south of Hoover Dam.

A hospital official says the 48-year-old male bus driver remains in fair condition at University Medical Center in Las Vegas.

Two women are still in critical condition at UMC. Four other Chinese tourists remain hospitalized in Las Vegas and Kingman, Ariz.

Authorities say the group was returning to Las Vegas from the Grand Canyon when the bus crashed at about 4 p.m. Friday near Dolan Springs, Ariz.

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