550 CMR 6.06
Duty to Intervene
A law enforcement officer present and observing another officer using or attempting to use
physical force, including deadly force, beyond that which is necessary or objectively reasonable
based on the totality of the circumstances, shall intervene to prevent the observed officer's use
of unnecessary or unreasonable force, regardless of the rank of the officer so observed, unless
intervening would result in imminent harm to the officer or another identifiable individual.
The failure of a law enforcement officer to intervene as set forth in 550 CMR 6.06 may
subject the officer to de-certification by the Commission.