More than 30 people were injured Wednesday when a public bus crashed into a building just outside Baltimore, Maryland, and one critical patient was extricated and taken to a hospital, authorities said.

First responders were on scene after a Maryland Transit Administration bus crashed on Reisterstown Road in Pikesville, Fox 45 News reported.

Baltimore County officials said “numerous civilian vehicles” were involved in the crash, including one that overturned.

One person was trapped inside the bus, and another in a car was rescued by responding crews, authorities said.

A building engineer was en route to the crash, the Baltimore County Fire Department said.

A second mass casualty incident alarm was issued shortly after the crash, officials said.

Maryland Gov. Wes Moore said he was monitoring the situation.

“Dawn and I are keeping everyone impacted in our hearts and prayers. We are deeply grateful for our first responders who acted with speed and skill to ensure the safety of our neighbors,” he wrote on X. “We’ve been in close coordination with local officials to provide any support needed on the ground.”

The Maryland State Highway Administration said roads near the crash were closed as crews responded. Drivers were urged to use alternate routes.