Cleveland voters supported Issue 24, a proposed amendment that would change how the city’s police department operates with a civilian-led board, Tuesday.

Nearly 60% approved of the measure with 97.9% of precincts reporting, according to unofficial results from the Cuyahoga County Board of Elections.

The city’s police union who was strongly against the ballot measure promised to fight its implementation, WOIO reports.

“It’s so disappointing that the majority of the voters fed into a vengeful group,” said Jeff Follmer, president of the Cleveland Police Patrolmen’s Association union. “This charter passing will be the downfall of Cleveland. Our contract will override this charter amendment. Look forward to beating this in court.”