Florida prosecutors are asking an appeals court to reconsider its decision to toss the murder conviction and prison sentence for a former FBI agent in a mob-style killing linked to jailed Boston mobster James "Whitey" Bulger.

The Miami-Dade State Attorney's Office filed a motion Thursday in the case of ex-agent John Connolly. A panel of the 3rd District Court of Appeal last month ruled that Connolly's second-degree murder conviction was barred by the statute of limitations because a firearms enhancement was improperly applied.

Connolly is serving 40 years in the 1982 slaying of Miami gambling executive John Callahan. Although a hit man shot Callahan, testimony showed Connolly fed information to Bulger and others that led to his killing.

Prosecutors say the appeals decision was wrong and are seeking a rehearing.