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Former Windsor Locks Police Sergeant Facing Coverup Allegation In Deadly Crash

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A Mazda driven by Michael Koistinen in a deadly crash in Windsor Locks in 2010. The hood is missing, and the windshield is shattered. Still image from a courtroom pool video feed.

A Mazda driven by Michael Koistinen in a deadly crash in Windsor Locks in 2010. The hood is missing, and the windshield is shattered. Still image from a courtroom pool video feed.

A former Windsor Locks Police Sergeant went on trial today, on a charge of interfering with the prosecution of his son in a fatal traffic accident.

Officer Robert Koistinen was on duty, and went to the scene of the crash, when his son hit and killed 15-year-old bicyclist Henry Dang.

On the stand, Windsor Locks resident Jeanne Johnson testified that she told a Windsor Locks Police officer that the driver had thrown something into her yard, but the officer failed to search for it, and did not take her name or contact information.

The object turned out to be a beer glass.  The states attorney accused Robert Koistinen of ignoring evidence and witnesses at the crash scene.

State Police eventually took over the investigation into the 2010 crash.  Michael Koistinen has since been convicted of manslaughter.

Witnesses told state police that Michael Koistinen had been drinking before the crash.

Michael Koistinen was an officer with the Windsor Locks Police Department.  He was off-duty at the time of the crash, and was later fired from the department.

In the courtroom, a recording was played, of a 9-1-1 call made by Michael Koistinen, shortly after the crash.  There were several long pauses, as a dispatcher tried to get Koistinen to respond and identify himself.

Koistinen did identify himself, and said he did not know what was going on.

Witness Derek Dubois testified that he was driving on Spring Street, and stopped at the crash.

“I saw the vehicle just after it had collided with the bicyclist,” Dubois said. “Being as dark as it was a night, I could just see the sparks coming from the vehicle, as it ricocheted up the street.”

Testimony is scheduled to resume Tuesday at 10 am.

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