Casares was taken by Life Flight to Memorial Hermann Hospital and is currently in stable condition at an undisclosed Houston hospital.
Casares's alleged shooter is Michael Warren, her boyfriend as well as a familiar face to those who frequented Sylvia's Enchilada Kitchen's popular food truck, No Borders.
Warren often manned the food truck and was also a partner in the Sylvia's restaurant chain. Warren remains at large today.
According to KHOU, Warren "fled in a black 2004 GMC Yukon" after the shooting. His vehicle has Texas license plates 42M-VT1.
Warren is now considered armed and dangerous. Anyone with information on his whereabouts should immediately contact Crime Stoppers at 281-342-8477 or the FBCSO at 281-341-4665.
Meanwhile, employees at the Sylvia's Enchilada Kitchen location at 6401 Woodway have set up a guest book for friends and fans of Casares to sign with well-wishes. Guests are encouraged to come and write words of encouragement to Casares; the book will be taken to the hospital in a few days by family members.
According to a source close to Casares, she is expected to be released from the hospital within the week and will likely return to work within three months.
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UPDATE: The Fort Bend County Sheriff's Office reports on Facebook that Michael Warren was arrested Thursday afternoon at a Rosenberg hotel. The full statement:
Fort Bend County Sheriff's Office detectives along with a Texas Ranger arrested a man wanted for aggravated assault Thursday afternoon at a Rosenberg motel.
Acting on an anonymous tip, detectives arrested Michael Warren, 58, and he is charged with aggravated assault stemming from a shooting incident in the Foster Creek subdivision between Richmond and Fulshear Monday, March 12, 2012.
The incident occurred at the victim's residence in the 1400 block of Foster Lakes Drive. Fort Bend County Sheriff's Office deputies arrived at the scene at about 9 p.m. Monday. Warren had already fled the scene in the victim's 2004 GMC Yukon.
The female victim of that incident has undergone surgery and is expected to recover. She is in stable condition in a Houston hospital.
Early Tuesday morning, a warrant was issued by District Judge Thomas Culver III and the manhunt began, stretching all the way to Lafayette, La., the suspect's hometown.
However, Warren was arrested at the Palace Inn, located at 26035 U.S. 59 near the intersection of FM 2218 in Rosenberg . The arrest occurred without incident.
Officials recovered the vehicle in the parking lot of a Lafayette hospital Thursday afternoon.
The suspect apparently was returned to Fort Bend County by a relative.
Warren is in the Fort Bend County Jail with a $100,000 bond.