An illegal alien is suspected in a brutal murder and sexual assault of a 92-year-old woman in New York City, prompting federal officials to place blame on Mayor Bill de Blasio and his city’s protection of criminals.

Reeaz Khan, a 21-year-old illegal alien from Guyana, was roaming free despite facing charges stemming from an attack on his own father in late November.

Khan, who allegedly used a broken mug to slice his father during a dispute at their home, was charged with misdemeanor assault, harassment, and criminal possession of a weapon, but “released without bail after being slapped with a temporary order of protection for his dad,” according to the New York Post.

Immigration and Customs Enforcement (ICE) issued a detainer for Khan, which NYPD allegedly ignored due to the city’s ‘sanctuary’ policies.

Maria Fuertes, 92, was out for a customary evening walk near her home in Queens when she encountered Khan, who is suspected of strangling and sexually assaulting her.

Fuertes was discovered hours later, lying in the street with her clothes pulled above her waist.

Her injuries included a broken spine, rib fractures, internal hemorrhaging, and tears in her vagina, the New York Daily News reports.