At least 21 people were injured, some of them critically, when a vehicle plowed into a crowd during a parade in the city of New Orleans on Saturday night.

The incident occurred during the Krewe of Endymion parade in the Mid-City section of New Orleans, according to reports.

New Orleans Police Chief Michael Harrison said one person was in custody and that he is being investigated for driving while intoxicated.

He said that police do not suspect terrorism.

One eyewitness told The Times-Picayune he was watching the parade when a pickup truck sped through the intersection.

The eyewitness said he heard three crashes then a fourth loud crash, and saw the truck had come to rest against a garbage bin. Several people, including a police officer, were pinned between the truck and the garbage bin or beneath the truck.

A young man was behind the wheel of the truck and, according to the eyewitness, "He took out rows of people.”

Another witness said the truck hit several vehicles and people, turned sideways then crashed into the garbage bin.