Milwaukee County prosecutors charged four people with murder Tuesday after they beat and restrained a man outside a hotel in June.

D’Vontaye Mitchell, 43, died June 30 after four Hyatt Regency Milwaukee employees dragged him from the hotel and pinned him face down to the concrete.

His family members have said they believe he was having a mental health episode.

On Tuesday, the Milwaukee County district attorney’s office charged Devin W Johnson-Carson, 23; Brandon LaDaniel Turner, 35; Herbert T Williamson, 53; Todd Alan Erickson, 60, with murder in Milwaukee County Circuit Court.

Aimbridge Hospitality, which operates the hotel, said last month that it fired several employees after Mitchell’s death. It was not immediately clear whether the four people who were charged had been employed by the hotel.

The Milwaukee County medical examiner’s office ruled Mitchell’s death a homicide caused by restraint asphyxia and the effects of cocaine and methamphetamine.

Ben Brasch, Anumita Kaur, Jiselle Lee and Justine McDaniel contributed to this report, which will be updated.