Court says Iowa lottery rigging investigation took too long

The Iowa Supreme Court on Friday overturned the conviction of a lottery employee implicated in a nationwide cheating scandal, saying his trial over a rigged $16.5 million jackpot was tainted by unjustified delays in the investigation.

The ruling is a victory for former Multi-State Lottery Association security director Eddie Tipton, whose lawyers argued that Iowa's long-running inquiry into the 2010 jackpot allowed the statute of limitations to expire. But it might have little practical impact.

Prosecutors had agreed this month to vacate the conviction under a plea agreement, regardless of how the court would rule. The deal requires Tipton to plead guilty in Iowa to ongoing...