The Des Moines County Attorney's Office has dropped all charges against a Burlington man in connection with a fatal boat crash in 2012.
Doug Metcalf was facing four counts of involuntary manslaughter and one count of boating while intoxicated causing death.
He was piloting one of the two jon boats that collided on the Mississippi River north of Burlington on May 19, 2012.
The Des Moines County Attorney's Office announced the decision this week.
A news release said the state cannot prove the charges against Metcalf beyond a reasonable doubt based on the current evidence.
Similar charges against the pilot of the other boat were dropped in June.