BUCKSPORT — A train derailed Sunday afternoon at a crossing on Route 15.

It is the second derailment in as many months on the line, which is owned by Massachusetts-based Pan Am Railways.

According to a dispatcher at the Bucksport Public Safety Building, the most recent derailment was reported at 12:09 p.m. Sunday.

The derailment occurred at a crossing next to the intersection with Kenney Drive, which is about three miles north of the main entrance to the Verso paper mill.

It was not immediately clear how many rail cars were involved in the derailment. Only one car was observed at the scene early Monday morning, a boxcar that was off the rails and on its side. Both sets of wheels were disconnected from the body of the boxcar.

The position of the boxcar and one of the sets of wheels was such that the rail line was not passable.

A Pan Am official could not immediately be reached Monday morning to provide more information about the derailment.

Route 15 was shut down for a time Sunday afternoon, and the Bucksport dispatcher said public safety personnel cleared the scene at about 6:15 p.m. Sunday.

Fresh pavement was visible at the scene Monday morning where repairs had been done the day before.

On May 25, four cars carrying papermaking chemicals derailed near the Orrington town line. Three of those cars were either fully or partially submerged in the Penobscot River at high tide.

Somewhere between 100 and 1,000 gallons of one of the chemicals (a liquid latex substance) spilled into the river, and the Maine Department of Environmental Protection was called in to monitor the situation.

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