A US Border Patrol agent has been arrested in the state of Texas on suspicion of killing four prostitutes, reports say.
Officers were looking for Juan David Ortiz after a fifth woman escaped from him and contacted police, AP reported.
Mr Ortiz fled but was arrested in a hotel parking lot in the city of Laredo.
Webb County Sheriff Martin Cuellar said police believed Mr Ortiz had acted alone.
“The county, the city can rest assured we have the serial killer in custody,” Sheriff Cuellar said. He was quoted by the Laredo Times newspaper.