A former Karnes County correctional officer has been arrested on federal charges stemming from a contraband smuggling and narcotics trafficking investigation, according to a Monday news release from the U.S. Marshals Service.

A man who was already in the Karnes County Detention Facility for a murder charge has been sentenced to 44 years in prison for aggravated assault with a deadly weapon against a public servant who tried to stop an attack on an inmate.