MADISON, Wis. (AP) -

The great majority of unsolved murders in Wisconsin over the last decade occurred in Milwaukee and involved black men as victims.

A review published Sunday by Gannett Wisconsin Media found that Wisconsin's had 277 murder cases between 2003 and 2012 that remain unsolved, though that left the state with a better percentage of cleared murder cases than the national average.

The analysis of state justice statistics showed policing agencies solved 82 percent of the 1,564 murders during the past decade. The national clearance rate is around 65 percent.

The average victim of an unsolved murder in Wisconsin in the last decade was 33 years old. A gun was used in nearly half the murders, which investigators say typically makes a case harder to solve.