( KTRS ) Immigration authorities last year sought to detain a Mexican national charged with killing five men, but they sent the detention order to an agency that didn’t have him in custody.

According to U.S. Immigration and Customs Enforcement, it wasn’t the first time Pablo Antonio Serrano-Vitorino eluded the agency In 2015, officials from a Kansas county where Serrano-Vitorino faced domestic battery charges queried federal immigration officials about him because he was born outside the country, but ICE didn’t respond before the county let him go.

Serrano-Vitorino, who was in the U.S. illegally, is now charged with killing a neighbor and three other men on Monday night in Kansas, then gunning down another man Tuesday morning in central Missouri.

He was arrested Wednesday and remains in police custody.