2nd cop charged in teen's death

Windsor Locks, Conn. (WTNH) - The father of a Windsor Locks police officer charged in the death of teenager has been charged in the case -- and he is also a police officer on the force.

Sgt. Robert Koistinen, 53, has been charged with hindering prosecution and interfering with an officer. He surrendered to state police this morning and was released after posting a $10,000 bond.

Koistinen's son, Ofc. Michael Koistinen, 24, has already been charged with first and second degree manslaughter, misconduct with a motor vehicle, negligent homicide and attempt to commit tampering with physical evidence. Police say he was off-duty and had been drinking for hours prior to an accident that killed 15-year old Henry Dang back on October 30.

Robert Koistinen, who was on-duty at the time of the accident, was one of the first officers to respond to the scene and was seen on surveillance tape coming and going from the Windsor Locks Police Department several times after the accident; it's believed that his son was inside the waiting vehicle. Michael Koistinen's arrest warrant also notes that Robert Koistinen accompanied his son to the hospital where he blocked an investigating officer from entering his son's hospital room.

State Police are still investigating.

Dang's family has maintained that there was a cover-up in their son's death.