Federal prosecutors say the nation's largest nursing home rehabilitation therapy provider has agreed to pay $125 million to resolve a lawsuit that alleged it knowingly had nursing homes submit false Medicare claims.

The Justice Department said Friday that it had reached settlements totaling more than $250 million with hundreds of hospitals where doctors implanted cardiac devices in violation of Medicare coverage requirements.

Four Florida Department of Corrections (DOC) investigators filed a federal whistle-blower complaint Monday against the state, saying they faced retaliation when they tried to expose wrongdoing, the Miami Herald reports.