BOSTON (WHDH) - A fiery crash in the O’Neill Tunnel is causing a massive traffic backup for commuters making their way into Boston on Thursday.

State police say the crash on Interstate 93 northbound at Exit 26 temporarily reduced traffic through the tunnel to a single lane.

The fire has since been extinguished and the lanes have been reopened.

This is a breaking news story; stay with 7News on-air and online for the latest developments.

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