I think this is a reference to Section 14-224:
(a) Each operator of a motor vehicle who is knowingly involved in an accident which results in the death of any other person shall at once stop and render such assistance as may be needed and shall give such operator’s name, address and operator’s license number and registration number to any officer or witness to the death of any person, and if such operator of the motor vehicle causing the death of any person is unable to give such operator’s name, address and operator’s license number and registration number to any witness or officer, for any reason or cause, such operator shall immediately report such death of any person to a police officer, a constable, a state police officer or an inspector of motor vehicles or at the nearest police precinct or station, and shall state in such report the location and circumstances of the accident causing the death of any person and such operator’s name, address, operator’s license number and registration number.
There are subsequent similar paragraphs about accidents resulting in injury or property damage.
The wording is a little bit confusing and it appears that you don't strictly have to report to the police, if you instead identify yourself to a witness.