The man wanted in a brutal stabbing over the weekend is now in custody and is expected to becharged with murder.
The Starr County Sheriff TMs Department confirmed Ruben Sanchez, a person of interest in a murder investigation self-surrendered Monday morning.
The Starr County District Attorney is set to charge Sanchez with murder.
The 39-year-old man known as "El Llanterro" was seen leaving the crime scene early Sunday morning.
The murder happened in Las Lomas, a colonia near Rio Grande City.
Investigators said when they arrived at the scene; they found the victim, Saul Rubalcaba lying face down in a pool of blood.
A pre-autopsy report showed he died from a stab wound to his chest and a slash wound to his throat.
Soon after, deputies were on the trail searching for Sanchez, and found his vehicle at Rio Motel abandoned.
At this time, a motive for the murder is unknown.
Authorities said Sanchez is being questioned by investigators but remains in custody under a $1 million dollar bond.