Another fake bomb threat in Detroit. This time, it was during a professional baseball game, but that didn't stop the Tigers from taking the field.

FOX News Radio's Jennifer Keiper reports:

Some of the thousands watching the Detroit Tigers game may have had no idea that anything was wrong.

There was no announcement or evacuation, but as the Tigers and the LA Angels took the plate and the field, police spread out through Comerica Park last night looking for an explosive device.

Nothing was found.

It's the third bomb threat made in less than a week in Detroit. Two others closed for several hours, the Windsor Tunnel and the Ambassador Bridge.

Jennifer Keiper, FOX News Radio.