BOSTON (CBS) —  State Police say a man went into cardiac arrest and died after fighting with officers trying to stop him from walking along the Massachusetts Turnpike near the Allston-Brighton tolls.

Police say a 47-year-old from Windsor, Conn., was wandering on the highway ramp near interchange 19 around 10:15 p.m. Wednesday when a trooper pulled over to direct him off the ramp.

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When the trooper approached the man, he allegedly became aggressive and bit the trooper “removing a large chunk of flesh from his arm,” the Suffolk County District Attorney’s office said.

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State Police used chemical spray on the man, the DA said.

During the incident, the man went into cardiac arrest. Officers performed CPR on the man but he later died at St. Elizabeth’s Medical Center.

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Two State Police troopers were taken to the hospital with injuries. The Suffolk County District Attorney is investigating.