Officials from Immigration and Customs Enforcement have arrested 86 people in five states in the Midwest.

The arrests happened over three days last week. In all, 26 people were arrested in Minnesota, 32 in Nebraska, 23 in Iowa, four in North Dakota and one in South Dakota.

ICE says 62 of those arrested, including 10 lawful permanent U.S. residents, had prior criminal convictions.

ICE says the operation was routine and targeted those with criminal convictions, as well as immigrants who were previously deported and re-entered the U.S. illegally and immigrants with standing orders for removal.

Four of the arrested will be criminally prosecuted. Those with orders for removal or who re-entered the U.S. illegally are subject to deportation. The rest will go through immigration proceedings.

One of the men arrested in Nebraska, was a 35-year-old Mexican national, who was convicted as an illegal alien possessing a firearm, as well as arrests for other firearms-related offenses

Another was a 33-year-old Salvadoran national who was arrested in Omaha. He had convictions for assault and battery, disorderly conduct, carrying a concealed weapon, and possessing marijuana.