WEST BOYLSTON, Mass. — The driver of a propane truck was flown by helicopter to a hospital after a crash on Interstate 190 in West Boylston on the night of Nov. 8, and parts of the highway near the Holden line remained closed the next morning, Boston 25 News reported.

Massachusetts State Police said the truck might be leaking and brought in a hazardous-materials team after reports of a possible propane leak, according to the station. Local firefighters and other first responders also went to the scene, police said.

Police did not name the driver or the hospital, and the driver's condition and injuries were not released. The reports did not say what caused the crash or how many vehicles were involved.

That night, northbound drivers were sent off the highway at Exit 4 and southbound drivers at Exit 9, while the Exit 6 ramps were shut, Boston 25 reported.

By the morning of Nov. 9, MassDOT said the northbound side of I-190 was blocked at mile marker 4, forcing every northbound driver off at Exit 4, Boston 25 News said in a later report. The Exit 4 northbound on-ramp was also closed, as was one southbound lane at mile marker 4.

Citing MassDOT, the station said delays were expected to last through midday as crews cleaned up after the crash and a fuel spill. Police had spoken the night before of a possible propane leak; the reports did not say what fuel spilled or how much.

Drivers heading through West Boylston and Holden were urged to stay away from the area if they could.