Arian Taherzadeh, a Washington, DC man who impersonated a Department of Homeland Security agent while prosecutors say he ingratiated himself with federal agents through gifts and rent-free apartments, pleaded guilty on Monday and agreed to cooperate with the Justice Department.

The case, which put four Secret Service members on administrative leave and involved years of deception, according to court documents, continued to crystallize Monday as new charges and information were revealed during the plea hearing.

Taherzadeh, along with his co-defendant Haider Ali, were charged earlier this year with falsely impersonating federal officers and possessing illegal, large capacity ammo magazines. Both men were released on home