Automobile traffic backed up on both sides of the MBTA railroad crossing on Rosemont Street around 10 p.m., Thursday night.
Haverhill police were at the scene after reportedly being called by the MBTA. Gates were down, lights flashing and alerts beeping at the Rosemont Street crossing, not far from Hilldale Avenue.
Visible immediately to the west of the crossing was a seemingly abandoned tanker car, marked “Ti-Pure, Titanium Dioxide.” Haverhill police said the train appeared to be “stuck,” but was later moved along.
Calls to MBTA and Pan Am Railways, operator of freight service along the route, were unsuccessful at deadline. Officials either did not return calls or dispatchers said they could provide no information.
The track also services Amtrak’s Downeaster line between Boston and Portland, Maine, and less frequently as far north as Brunswick, Maine.
Titanium dioxide is a used as a pigment, and may be found in paint, sunscreen or food coloring.