Photo by JEFFREY HASTINGS A Nashua transit bus sits partially inside a daycare facility at 352 Elm St. in Milford Thursday afternoon as crews await a tow truck. The driver reportedly suffered a medical problem, police said.

MILFORD – Teachers and roughly 10 children inside the Early Learning Center of Milford all escaped injury when a Nashua Transit bus with one passenger on board crashed into the building Thursday afternoon.

Police Chief Craig Frye said it’s believed the driver of the bus suffered a medical problem, causing him to lose control of the vehicle, cross a parking lot and strike the building.

He was transported by Milford ambulance to a Nashua hospital for treatment, Frye said. His identity and condition weren’t immediately available.

Frye said there was one passenger on the bus, an adult who sustained minor injuries and was also transported to a Nashua hospital.

The crash occurred about 12:30 p.m. at 352 Elm St., an L-shaped, split-level building on the corner of Elm Street and Westchester Drive, and across Elm Street from Hayward’s ice cream.

Photo by JEFFREY HASTINGS The damage to the building at 352 Elm St. in Milford is shown after the Nashua Transit bus was towed from the scene following Thursday's crash. The driver reportedly suffered a medical problem, police said.

Frye said crews were initially dispatched to a motor vehicle crash at the location. Upon arrival, they found the bus up against the front of the building, its engine compartment almost entirely inside the structure.

“We were very fortunate there were no other vehicles involved,” Frye said.

He said the bus will be inspected for any issues that may have contributed to the crash.

Photo by JEFFREY HASTINGS A Nashua transit bus was heavily damaged Thursday when it struck a daycare building on Elm Street in Milford. The driver reportedly suffered a medical problem, police said.

Photo by JEFFREY HASTINGS Milford firefighters get ready to shore up the Nashua transit bus that crashed into 352 Elm St. in Milford Thursday afternoon. The driver reportedly suffered a medical problem, police said.

Photo by JEFFREY HASTINGS Police and firefighters inspect the scene where a Nashua transit bus crashed into a daycare building at 352 Elm St. in Milford Thursday afternoon. The driver reportedly suffered a medical problem, police said.

Photo by JEFFREY HASTINGS A Milford ambulance pulls up to the scene at 352 Elm St. in Milford Thursday afternoon, where a Nashua transit bus crashed into a daycare building. The driver reportedly suffered a medical problem, police said.