DALLAS (CBSDFW.COM) — Police in Dallas have made an arrest in a triple homicide case from last month.

Officials took Efrain Cisneros into custody for the September 26 murders at the Super 7 Inn on Gardner Road.

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The manager of the motel found Rachel Escamilla, Peggy Bailey, and Michael Rivera dead inside one of the rooms.

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Rachael Escamilla, 38, Peggy Bailey, 56 (courtesy: GoFundMe)

Officials have never said exactly how the man and two women died. When Dallas Fire-Rescue responded to the scene they would only say that the victims died from “homicidal violence.”

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Cisneros was taken to Dallas police headquarters and interviewed by detectives. He was later taken to Lew Sterrett Jail and charged with capital murder. Bond for the 37-year-old has not been set.