BALTIMORE (AP) — Baltimore’s police commissioner is criticizing the decision of three officers charged but not convicted in the death of Freddie Gray to attend a conservative group’s gala where they were honored for their service.

WBAL-TV reports Commissioner Kevin Davis said Wednesday he doesn’t condone their appearance at the Media Research Center’s annual gala Sept. 22. He wants to examine whether department policy is stringent enough to bar that kind of off-duty activity.

Lt. Brian Rice and officers Edward Nero and Garrett Miller walked onstage to loud applause at the group’s annual awards gala in Washington. Officers Caesar Goodson and William Porter, and Sgt. Alicia White do not appear in the video.

Prosecutors dropped all charges after three officers were acquitted and another’s trial ended in a hung jury.

Gray, a young black man, died a week after his neck was broken as he rode in the back of a police van, handcuffed and shackled but not seat-belted in.