Investigators believe the device inside is consistent with a smoke bomb or smoke grenade.
“It’s actually worse of a suspicion because there’s a large French delegation saying at the hotel.”
Police say a “bag of interest” was found early Thursday morning.
The bomb squad was called in after a suspicious black bag was discovered by a street light near the courthouse in downtown Detroit.
Police have given the all-clear after a suspicious package was discovered in Greektown, forcing the People Mover to temporarily shut down.
Police closed off the area, near Grand River and Bagley, to investigate.
A gas station in Woodhaven was evacuated after a “suspicious package” was found on the property.
A bomb-sniffing dog had a hit on some cargo on a plane on the south end of the McNamara Terminal.
The Ambassador Bridge was temporarily closed,after a “suspicious package” was spotted on the Windsor side.
Detroit police are investigating reports of another suspicious package in downtown Detroit.