A man has died in a police shooting during an operation near a motorway.

An Iowa man has been charged with two counts of first-degree murder after two policemen were shot dead on Wednesday.

The death toll in a shooting at a regional police training centre in Jordan has risen to eight, according to reports.

The defendant was trained to be a patrolman in 1964 but left in 1965. He was out of law enforcement for 35 years.