Officials in Amherst, Massachusetts are totaling up the costs of Saturday’s “Blarney Blowout.” The series of pre-St. Patrick’s Day parties saw more than 70 arrests and police in riot gear breaking up large gatherings.

Amherst Town Manager John Musante says overtime for police and other public safety personnel will cost the town thousands of dollars. He says he is satisfied with the response by University of Massachusetts officials, before and after the rowdy, drunken partying.

“The messaging, in multiple ways, was very clear,” Musante says. “Enjoy yourselves, enjoy yourselves responsibly. If you violate the law or other people’s rights, or destroy property, whatever, you will face consequences. Now some young people will be held accountable.”

Musante says starting Saturday morning, police responded to 240 calls, but none of them were to bars in downtown Amherst where many students also gathered.

Some of those who were caught up in the crowds now have legal issues to deal with:  About two dozen of them were arraigned in district court Monday.  Charges include failure to disperse, alcohol violations and assault and battery on a police officer.

The Associated Press contributed to this report.