Police arrested and charged more than 100 people in Ocean City over the weekend after an unpermitted car rally lured crowds of maskless 20-somethings to the resort town.

The event known as H20i filled the beach community Friday and Saturday nights, despite efforts by police and Ocean City Mayor Rick Meehan to keep it away. Meehan said when the gathering came through town last year, the downtown area was overrun with “speeding, reckless driving, spinning of tires” and “demonstration driving,” prompting roughly 1,400 police citations and 100 arrests, according to Fox 5 DC.

This year, officials lowered speed limits and raised fines in an attempt to impose law and order, but videos posted to social media show how unsuccessful they were. Attendees in cars and on foot filled the streets in downtown Ocean City, sometimes setting off fireworks. Police cracked down on the event, hauling away 115 cars on Friday night alone, according to WJLA. “Never seen so many cars being towed,” an attendee tweeted Saturday.

While the summer has seen a number of clashes between crowds and police, the event was not directly associated with ongoing protest movements. However, videos showing police tackling revelers circulated on social media Sunday, drawing criticism of heavy police tactics.

Some attendees defended H20i, describing it as an innocent gathering of auto lovers. “It’s just a bunch of car people that like cars, want to drive and enjoy them,” attendee Alex Marbach told WJLA. “I don’t think there’s anything wrong with that.”

Authorities say the event was relatively peaceful Saturday, but the situation erupted that night as hundreds of attendees “became unruly and destructive.” Ocean City Police called in backup from state authorities and sheriff’s offices in Worcester, Wicomico and Queen Anne’s counties, the Baltimore Sun reports.

“This is not a car show and the majority of these visitors are not car enthusiasts,” said Ocean City Police Chief Ross Buzzuro. “They are here to disrupt, destroy and disrespect our community and our law enforcement officers.”

It’s not yet clear what impact H20i could have on the number of confirmed coronavirus cases in Maryland. Worcester County — which includes Ocean City — had the highest positivity rate in Maryland in early September. As of Saturday, the county’s positivity rate is 7.07%, more than double that of the state.