UDPATE (4/21): Starr County authorities said Ismael Mares was taken into custody at his home without incident.

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STARR COUNTY-A murder suspect remains on-the-run from authorities in Starr County.

The Starr County Sheriff's Office identified Ismael Mares, AKA "Polon" as a person of interest.

Around 10:30 Saturday night, authorities responded to a shooting in the El Chaparral Subdivison, east of Rio Grande City.

At the scene, they found the body of a 26-year-old woman, with a gunshot wound to the head.

Her identity is not being released at this time.

Investigators are still looking into a possible motive for the shooting.

Anyone with information on the whereabouts of Ismael Mares, is urged to call the Starr County Sheriff's Office at (956) 487-5571.

Authorities are warning the public to take caution, as he is considered armed and dangerous.