DALLAS (AP) — Texas authorities say a supervisor for the U.S. Border Patrol killed a woman with whom he was romantically involved and her 1-year-old child before calling 911 claiming to have discovered the bodies near a park along the border with Mexico.

Twenty-eight-year-old Ronald Anthony Burgos Aviles was being held without bond Tuesday in the Webb County jail on two counts of capital murder.

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Laredo police spokesman Joe Baeza says Burgos Aviles was identified as a person of interest within an hour of the 911 call Monday, but Baeza declined to elaborate.

Baeza said Tuesday that 27-year-old Grizelda Hernandez and her son, Dominick Alexander Hernandez, likely were killed Monday near the park.

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Online jail records do not indicate an attorney for Burgos Aviles to answer the allegations.