FIVE PROTESTERS ARRESTED: Click here for live updates on the situation Wednesday morning.
The Massachusetts Department of Transportation is warning travelers in the Boston area of a planned protest Wednesday morning that could disrupt the commute.
A protest group was discussing plans to interrupt travel on "several routes" at about 7 a.m., the agency said in a tweet. It wasn't immediately clear what routes would be blocked or how.
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Officials didn't say which group planned the protest.