One person was killed and three others were seriously injured in a crash on Route 3 in Tyngsborough Friday, authorities said.
The crash happened around 2:30 p.m on Route 3 north at mile marker 89, authorities said.
Both sides of the highway were closed in the area around 3:15 p.m., according to State Police spokesman Timothy McGuirk.
The southbound side reopened around 3:45 p.m., police said. The northbound side remained closed around 4 p.m., authorities said.
State Police are investigating the cause of the crash.
This is a breaking news story and will be updated as more information becomes available.
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