BUCKFIELD — Two people were seriously hurt in a crash at the Buckfield/Sumner transfer station Saturday morning, police said.

The Oxford County Sheriff’s Department said the crash happened shortly before 11 a.m. at the transfer station, which is on Route 140.

The crash occurred when one car hit a second, which was then pushed into a pedestrian at the station. The second vehicle also struck a third vehicle and then rolled over, the sheriff’s department said, but further details were not available.

The sheriff’s office said two people – the driver of the second car and the pedestrian – were taken by helicopter to Central Maine Medical Center in Lewiston with injuries that were considered to be life-threatening. A third person – the driver of the first car – was taken to CMMC with injuries that were described as not life-threatening.

The sheriff’s office said more information, including the names of the victims and whether any charges were filed, was not available Saturday afternoon. Route 140 was shut down to allow officers to complete a crash scene reconstruction as part of the investigation.