Another police officer who responded to the U.S. Capitol riot on Jan 6 has died by suicide, according to the Metropolitan Police Department.

Officer Gunther Hashida, an 18year veteran of the force in Washington, D.C., was found dead in his residence on Thursday.

The cause of death was suicide, police told the Washington Examiner.

Hashida, who joined the department in May 2003, was assigned to the emergency response team within the Special Operations Division and responded to the riot.

“We are grieving as a Department as our thoughts and prayers are with Officer Hashida’s family and friends,” the department said in a statement.

Hashida’s suicide is the third among law enforcement officers who responded to the Capitol on Jan. 6.