Police say the "30 Rock" star was taken into custody at about 10:15 a.m. Tuesday. They say two officers noticed him riding his bicycle the wrong way on 16th Street near Fifth Avenue near Union Square Park.
They say the notoriously hot-headed actor was asked to show identification. That's when they say he acted belligerently toward the officers and was arrested. He's since been released.
A representative for Baldwin didn't immediately return a request for comment.
Police say the 56-year-old Baldwin was issued a summons for riding a bike the wrong way and for disorderly conduct.