ROWLAND HEIGHTS (CBSLA.com)—   Sheriff’s Homicide Detectives made an arrest Sunday in the early-morning fatal stabbing of a 21-year-old woman in Rowland Heights.

The victim was stabbed around 2 a.m. in the 1900 block of Baston Avenue, authorities said.

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When deputies arrived on scene, they discovered the victim, a 21-year-old Latina, lying in the doorway of her apartment suffering from a stab wound. She was transported to a hospital where she was pronounced dead.

According to witnesses, the victim was arguing with her sister-in-law inside their shared apartment. During the argument, the sister-in-law — a 19-year-old Latina — allegedly stabbed the victim in the neck and fled. The sister-in-law was located a short time later and taken into custody without incident.

The murder weapon was recovered at the scene, authorities said.

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It is unknown at this time what the argument was about.

The suspect and the victim’s names are being withheld during the investigation, authorities said.

The suspect was booked at Walnut Sheriff’s Station for murder and is being held in lieu of $1 million bail.

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Anyone with information about this incident is encouraged to contact the Los Angeles County Sheriff’s Department’s Homicide Bureau at (323) 890-5500.