The U.S. Marshals Service along with eastern Iowa law enforcement agencies set up a sting to get fugitives off the streets of eastern Iowa.

The service sent letters to the homes of around 100 fugitives who were know to be violent in nature. The letters promised free tickets to an upcoming U.S. Cellular event, but when they arrived authorities took them into custody.

It’s something law enforcement have never put on in eastern Iowa before, but has happened in areas across the country.

“Usually there's some kind of enticement to have a fugitive come to us. It's pretty unique in nature. Not everyone going to fall for something like this, but it is unique also in the kind of payoff for law enforcement. There's a lot of time and energy that going into something like this in the preparation, in a traditional sense,” Marshals Service Deputy Nicholas Bonifazi said.

The sting was only able to arrest one fugitive, but Bonifazi said it was a success.

“As a task force we have spent countless hours on one individual, so if we get the right individual into custody today, one individual would be a success for me. But obviously I would like to see some more of these violent individuals off the street,” he said.

Authorities transferred that fugitive to the Linn County jail, and the correct county will extradite her if need be.

The service sent letters to fugitives in Linn, Black Hawk, Jones, and Buchanan counties. By just sending the letters alone, the Marshals Service was able to arrest four. Now it says it will focus on going after the sex offenders on the list who may have fled to other states.