Subscribe | UPI Odd Newsletter Subscribe DETROIT, Nov. 9 (UPI) -- The Detroit Police Department's Eastern District building was evacuated after a person walked in holding a grenade. The unnamed visitor entered the building Friday afternoon and announced, "Look what I found," Detroit Police spokeswoman Eren Stephens said. Advertisement The incident prompted the closing of Gratiot Street, where the police office is located, the Detroit News reported. A bomb squad was called to the building and police public information officials said Department of Homeland Security personnel are assisting in the investigation. No arrests were made.