Three women have been charged with murder in connection with the fatal stabbing of a Texas mother of five late last week, authorities said.
Police determined the assault occurred on the 800 block of East 10th Street in Del Rio, located about 150 miles west of San Antonio near the United States-Mexico border.
Peña was transported to a medical facility in San Antonio for emergency treatment due to the severity of her injuries, where she was later pronounced deceased, police said.
After gathering evidence, reviewing surveillance footage, and interviewing witnesses, detectives were able to identify three suspects in the case: Kitty Mia Diaz, 21; Amaya Cookie Diaz, 19; and Kyandra Renee Faz, 21.
Officials said Faz—described by media outlets as a friend of the sisters—was taken into custody a short time later. All three women remained in custody at the GEO Correctional Facility as of Friday morning, pending their initial arraignment.
Officials did not provide any details about a motive or what may have led up to the fatal stabbing. The investigation remains ongoing, and police said additional charges may be filed as investigators continue gathering evidence in connection with Peña's death.
In the wake of the incident, her friend, Christina Salinas, told KENS 5 News that she had missed a call from Peña not long before the assault took place.
Speaking with the station, another longtime friend, Lupita Garza, remembered Peña as a caring person who was quick to lend a helping hand to others.
"Caro was one of a kind. She helped everyone who was in need," Garza said. "She brought so much light to so many of us, especially her warm hugs and that one-of-a-kind laugh. She always made sure she had a smile on her face everywhere she went."