Several people at Lambert Airport in St. Louis were injured Friday after an apparent tornado touched down, spewing debris over the airfield, bursting glass in the concourse and damaging cars atop a parking garage.

The tornado was part of a series of strong storms that struck central and eastern Missouri. Unconfirmed tornadoes were reported in several counties in the St. Louis area.

Four people were taken to the hospital with minor injuries after glass shattered as the storm hit, airport spokesman Jeff Lea said. An unspecified number of others were treated at the scene for cuts blamed on flying glass.

Lea said several cars parked at the airport were damaged, as well as an Air National Guard facility. The Federal Aviation Administration said the airport was closed.

Baseball game delayed

Damage, possibly from a tornado, was also reported at several towns near the airport — Maryland Heights, Bridgeton, St. Ann, Ferguson and Florissant. Interstate 270 in that area was closed. Trees and power lines were down. A tractor-trailer was sitting on its end.

Unconfirmed tornadoes were reported near New Melle and Dardenne Prairie in St. Charles County. St. Charles County Sheriff's Lt. Craig McGuire said there were early reports of at least 20 homes damaged in the county.

"It was pretty wicked," he said.

In downtown St. Louis, Busch Stadium officials hurriedly moved Cardinals fans to a safe area as tornado sirens blared. The game with the Cincinnati Reds was delayed for hours.

The utility company Ameren Missouri reported more than 39,000 power outages.