The airport said in a statement that a "suspicious object" was found at a Transportation Security Administration screening checkpoint at 5:50 a.m. at the airport's North Terminal in Romulus.
The airport said the check-in lobby was shut down.
The airport said the squad left the terminal with the item, which had been in an X-ray machine, and travelers were allowed to return about 8:20 a.m.
Airport spokesman Scott Wintner says in an email a person associated with the object was detained, but he didn't have details.
The TSA said in a statement the evacuation was a "precautionary measure."