As unemployment climbed and tax revenue fell, the city of Baltimore laid off employees and cut services in the midst of the financial crisis. Its leaders now say the city’s troubles were aggravated by bankers’ manipulation of a key interest rate linked to hundreds of millions of dollars the city had borrowed.

Baltimore has been leading a battle in Manhattan federal court against the banks that determine the interest rate, the London interbank offered rate, or Libor, which serves as a benchmark for global borrowing and stands at the center of the latest banking scandal. Now cities, states and municipal agencies nationwide, including Massachusetts, Nassau County on Long Island, and California’s public pension system, are looking at whether they suffered similar losses and are weighing legal action.

Dozens of lawsuits filed by municipalities, pension funds and hedge funds have been consolidated into a few related cases against more than a dozen banks that are involved in setting Libor each day, including Bank of America, JPMorgan Chase, Deutsche Bank and Barclays. Last month, Barclays admitted to regulators that it tried to manipulate Libor before and during the financial crisis in 2008, and paid $450 million to settle the charges. It said other banks […]