An accident involving a State Police trooper caused traffic backup on I-91 Tuesday evening.
According to State Police in Northampton, the accident involving the trooper happened in the southbound lane of the highway around 5 p.m.
The accident involved two vehicles, which caused one southbound lane to shut down. That lane has since reopened.
The trooper did not say if anyone was seriously hurt.
22News is following this breaking story and will bring you updates as more details become available.