REVERE — An incident involving Massachusetts State Police occurred Wednesday morning and caused a traffic build-up on Lynnway.

The Revere State Police Barracks received a call about the incident at 5:40 a.m., State Police reported. Caller reported a man sitting in a vehicle with a firearm on Revere Beach Boulevard who may have taken his own life.

A hostage negotiator, K-9 Unit and Revere Fire/EMS joined Revere Barracks troopers in the response.

Wednesday afternoon, Ocean Avenue and Revere Beach Boulevard were reported to be closed between Beach Street and Revere Street, causing increased traffic.