About 20 vehicles slammed into one another during a snow squall Sunday afternoon in a pileup that temporarily closed southbound Interstate 95 west of Boston, state police said.
The crash happened at about 3 p.m. near exit 27 in Waltham. Several people incurred minor injuries.
State police said the highway's left travel lane was reopened at around 4 p.m.
People were advised to avoid the area, and traffic was diverted at Trapelo Road as emergency crews work to help the injured and clear debris.
Police said a snow squall may have contributed to the crash. The road had been plowed but authorities had warned of blowing snow.
This article was originally published on February 15, 2015.