Initially, police said there were no signs of trauma to either child, but an autopsy found otherwise. The girls' father was sentenced to 40 years.
The constable's office on Thursday warned of a heavy police presence at an apartment complex off Ella Boulevard, where a baby wasn't breathing, deputies say.
The suspect is being held on a $750,000 bond after being arrested at a home in Porter, Texas, where he lived with the mother and her baby, according to the sheriff's office.
Multiple family members said Fernando Vega was abusive toward Angelina Calderon, but one aunt believes that while Calderon didn't physically hurt the girls, their mother still has some accountability for their deaths.
Court paperwork details numerous injuries of 5-week-old twins, which prosecutors say were committed by their parents before the babies were found dead in their apartment.
Police have filed charges against 21-year-old Fernando Vega and Angelina Calderon in connection to their twin girls' death, who were found unresponsive inside their southeast Houston home back in October.