KANSAS CITY, Kan. (AP) — The federal agency that handles immigration says it made a mistake when it sent a September order to detain a man accused of killing five people earlier this week.

Pablo Antonio Serrano-Vitorino has been charged with first-degree murder in the Monday shooting deaths of his Kansas City, Kansas, neighbor and three other men and the killing of a man in central Missouri early Tuesday.

U.S. Immigration and Customs Enforcement said in an email that Serrano-Vitorino was deported from the U.S. in 2004, but was fingerprinted in Overland Park, Kansas, in September 2015 after a traffic violation.

ICE says that fingerprinting generated an ICE order to detain Serrano-Vitorino, but that the agency “erroneously issued” the detainer to the Johnson County Sheriff’s Office instead of the Overland Park Municipal Court, which had handled his traffic violations.