GRAND PRAIRIE -- A Dallas County juvenile probation officer was found stabbed to death at a Saturday fire in south Grand Prairie, police said Monday.

Firefighters responding to a 6 p.m. fire in the 2600 block of Channing Drive found Raymond Hernandez, 45, according to Grand Prairie police.

Hernandez was pronounced dead at the scene.

On Monday, police released a sketch of a "person of interest" who was seen leaving the area. Police also are looking for a purple Dodge Stratus sedan.

Police declined to release further details, citing the ongoing investigation.

Anyone with information is asked to call the Grand Prairie Police Department at 972-237-8911 or Crime Stoppers at 972-988-TIPS. Tipsters remain anonymous.