The attorney general’s office has been investigating the incident since video surfaced.
It’s against the law to use a taser in Maine except for defense.
In his report, deputy Attorney General William Stokes says the state will not press charges because the officer who was tased does not feel he’s a crime victim.
The deputy told police he was aware that the device was going to be used, and said that if he had objected his colleague would not have done it.
Stokes said his decision not to file charges does not suggest approval of the conduct of any of the officers involved.
The Lincoln County sergeant who loaned the taser to the Knox deputies has been suspended for two days without pay.