The Montgomery County police union has filed a lawsuit against the county for breaching its contract. When the County Council looked for ways to fill a $300 million gap in the budget for the fiscal year that began Friday, it cut some health and retirement benefits, a wage increase, and a tuition assistance program that was criticized as a source of waste and fraud — all of which had been agreed to in the Fraternal Order of Police’s negotiations with the county executive’s administration.

“The action of the County Council in adopting [the fiscal 2012 budget] intentionally impaired the ability of Montgomery County to perform its contracted obligations under the collective bargaining agreement,” the lawsuit reads.