A United States border patrol agent who authorities called "serial killer" has confessed to four murders after his arrest.
Ortiz was charged with four murder charges and one unlawful restraint with aggravated assault with a deadly weapon, according to Webb County District Attorney Isidro R. "Chilo" Alaniz.
Alaniz said investigators are still trying to determine a motive for the killings.
Border Patrol agents are great men and women who work hard to keep us safe, and we thank them for their work.
"We have probable cause to believe that he is responsible for this series of murders, which I would qualify as a serial murderer", Alaniz told reporters at a news conference, the Houston Chronicle reported.
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Authorities said that nearly had no doubt that Ortiz was behind the gruesome acts, with Webb County Sheriff Martin Cuelllar stating that police are in possession of "very strong evidence" implicating Ortiz. The names of those victims have not been released.
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The bodies of first two victims were discovered in a rural part of Webb Vounty two weeks ago, prompting police to launch a murder investigation.
A woman claiming to be another victim of the agent's alleged attacks escaped from Ortiz and contacted law enforcement.
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Ortiz, a 10-year Border Patrol veteran, was arrested early Saturday after the fifth woman escaped and found a state trooper. He ran to a nearby hotel where he was arrested on the third floor of a parking garage hiding in a truck, authorities said.
The names of the victims have not been released, but Alaniz says two are USA citizens.
Andrew Meehan, a senior US Customs and Border Protection official, said in a statement that the agency was co-operating fully with investigators.
"I extend my condolences to the families of the victims during this hard time".
A Texas Department of Public Safety sergeant didn't return several messages seeking comment on Saturday. They also said Ortiz is believed to have been working alone.
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