LEE, Mass. (WWLP) – All lanes of the Mass Pike are back open Friday afternoon after a serious car accident.

According to MassDOT, around 1:11 p.m. Friday afternoon, all eastbound and westbound lanes were closed following an accident near the 13.4 mile marker in Lee. MassDOT says the crash involves serious injuries and Med flight has been called in to assist.

Around 1:38 p.m., all eastbound lanes were reopened but the two right travel lanes on the westbound side remained closed. All lanes of traffic were reopened by 4:50 p.m. Friday afternoon.

22News will continue to follow this story and update this article as soon as more information is made available.