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Deputies with the Harris County Sheriff's Office responded to a shooting at 255 Assay Street.
The woman's family and boyfriend said they went to check on her after not hearing from her, according to investigators.
When her boyfriend entered her apartment, he found her and her ex-boyfriend unresponsive and called law enforcement, deputies said.
Upon arrival, deputies found the woman and her ex-boyfriend with apparent gunshot wounds.
They were pronounced dead at the scene, according to the sheriff's office.