HARRIS COUNTY, Texas - The death of three people found in a Harris County apartment building has been determined to be a murder suicide, according to Harris County Sheriff's Office detectives.

3 dead in apartments on Walters Road

What we know:

On Monday, detectives were called to the Shadow Ridge Apartments in the 12200 block of Walters Road after a person called to report three people dead inside a unit.

The three people have been identified as 30-year-old Yaquelin Arias Rivas, her 19-year-old younger sister, Saidia Machado, and Rivas' estranged ex-boyfriend, Sebastian Rodriguez, 40.

Detectives learned the male caller went to the apartment to check on his female co-worker who had not shown up for work, officials say.

The sheriff's office reports EMS confirmed all three were dead a

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