The Metropolitan Police Department (MPD) on Monday confirmed a fourth law enforcement officer who responded to the Capitol on Jan. 6 committed suicide.

Officer Kyle DeFreytag served in the city’s 5th District and was at the Capitol to enforce curfew violations, Metropolitan Police confirmed. Chief Robert J. Contee III sent a message to the police force notifying personnel of DeFreytag’s death last month.

The confirmation of DeFreytag’s death came hours after a spokeswoman for MPD said Officer Gunther Hashida was found dead at his residence last Thursday. Hashida, who had been with the department for eighteen years, was the third responding officer to take his life.

So far, a total of four law enforcement officers who responded to the Capitol riots have taken their lives, including Capitol Police officer Howard Liebengood and MPD officer Jeffrey Smith, both committing suicide in the days following the January incident.