Joseph Ruiz arrested for murdering adoptive mother Maria Hernandez in Chicago.

Joseph Ruiz, 28, was arrested on Thursday for the alleged murder of his adoptive mother, 62‑year‑old Maria Hernandez, after police found her body covered with a blanket in their South Chicago home on March 12. Ruiz told officers he had “gotten into it” with Hernandez before the killing, according to a police statement. Detectives said the argument turned violent, and the victim died from blunt‑force injuries.

The case has drawn attention because it involves an adoptive parent‑child relationship and adds to Chicago’s already high homicide rate. Police entered the home after neighbors reported a disturbance and heard shouting. The city has recorded a 12 % rise in domestic homicides over the past year, prompting city officials to call for more resources for families under stress. Advocates for adoptive families say the tragedy highlights gaps in counseling and support services that could help prevent similar outcomes.

An autopsy confirmed that Hernandez died from blunt‑force trauma to the head. Ruiz faces first‑degree murder, unlawful restraint and aggravated battery charges and is being held without bail. A preliminary hearing is scheduled for May 2. Hernandez’s sister, Rosa Martinez, described her sibling as a “caring mother” who helped raise three children, and expressed shock at the loss. The Cook County State’s Attorney’s office said prosecutors will seek the maximum penalty. Community leaders have urged city officials to expand counseling resources for families dealing with conflict, while investigators continue to look for any additional suspects or accomplices.