Boston's top police official will not be subject to discipline by the state's oversight agency after he was accused of inappropriate behavior in the Karen Read case, according to a letter written by leadership at the Massachusetts Police Officer Standards and Training - or POST - Commission.

Last month, attorney Alan Jackson accused Boston Police Commissioner Michael Cox of lying about his knowledge concerning a witness in the case - former Boston Police Officer Kelly Dever. The letter was addressed to Boston Mayor Michelle Wu and the POST Commission.

Stream NBC10 Boston news for free, 24/7, wherever you are. WATCH HERE

The Commission's executive director wrote a response to Jackson, saying Cox will not face a disciplinary review by them, pointing out that he is not a sworn law enf

See Full Page