The Associated Press

BOSTON — Massachusetts State Police say a manhole cover crashed through a windshield on a major Boston highway during the morning commute, killing a driver.

Spokesman David Procopio says the manhole cover in the left lane of Interstate 93 south became dislodged and went airborne at about 7:50 a.m. Friday.

After the manhole cover struck the woman’s windshield, her vehicle continued forward before striking a wall on the left shoulder of the highway and coming to a stop.

It’s unclear what caused the manhole cover to become dislodged. Two lanes of the highway were shut down during the investigation, backing up traffic.

The victim’s name is being withheld until her family can be notified.