CNN) -- Tear gas and pepper spray hung in the air as police in riot gear descended on Keene, New Hampshire, on Saturday night, trying to disperse a rowdy crowd that brought chaos to the city's 24th annual Pumpkin Festival, CNN affiliates reported.
"State and local public safety officials are on the scene and have been working closely together to defuse the situation," Gov. Maggie Hassan said a statement. "We will continue to monitor the situation and provide any assistance necessary to Keene."
Bonfires burned into the early hours of Sunday morning on city streets that were littered with broken beer and liquor bottles, video from CNN affiliate WMUR showed.
"I am saddened and disheartened at the events surrounding this year's Keene Pumpkin Festival," said Keene State College President Anne Huot. "Despite the concerted efforts of organizers, city officials, police, and Keene State College, there continued to be disruptive behavior at parties in multiple locations around the city, injuries, and property damage."
Huot said Keene State students bore some of the responsibility for the unruly behavior, but also suggested that some outside the community had billed the event "as a destination for destructive and raucous behavior."
Authorities weren't able to provide exact figures, but CNN affiliates reported dozens of arrests and the Southwest New Hampshire Mutual Aid Dispatch Center reported multiple ambulances being sent to the scene.
"I got hit with a Jack Daniel's bottle, like across the face," Keene State student Roger Creekmore told WMUR.
Steven French, 18, who was visiting from Haverhill, Massachusetts, described the chaotic scene to the local paper, The Keene Sentinel, as "wicked."
"It's just like a rush. You're revolting from the cops," he told the paper Saturday night. "It's a blast to do things that you're not supposed to do