(MIAMI) -- A bus slammed into an overpass at Miami International Airport on Saturday, killing two people and critically injuring three passengers, authorities said.
The 27 other passengers on board the tour bus also sustainted injuries when it hit the overpass at 20 mph while traveling through the airport's arrivals section, an area off-limits to larger vehicles, Miami International Airport spokesman Greg Chin said.
"This driver got disoriented or I don't know what, but he wound up on the lower drive and he was going fairly fast, so he made contact with the roof of the lower drive," Chin said, adding that the overpass had been "clearly marked" with a warning that it was 8 feet, 6 inches high.
Buses are directed to go through the departures level, which allows for higher clearance vehicles, Chin said.
Lt. Rosanna Cordero-Stutz, of the Miami-Dade Police Department, told ABC News' Miami affiliate that police are interviewing the bus driver, who said he was unfamiliar with the area and did not mean to end up at the airport.
It was not yet known where the private bus, which is used for tours, had been heading.
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*An earlier version of this story incorrectly stated that the bus involved in the accident was a double decker bus.