A tragic incident has unfolded in Philadelphia, where a Pennsylvania man stands accused of the brutal killing of his girlfriend’s young daughter. The child was allegedly beaten and suffocated before being left in the basement of a home in the city.

Sean Hernandez, aged 21, is facing a slew of serious charges, including murder, child endangerment, possession of an instrument of crime, reckless endangerment, and obstruction of justice, as reported by the Philadelphia District Attorney’s Office. Alongside Hernandez, two other individuals, 21-year-old Anthony Lowrie and 20-year-old Alycia McNeill, are charged with obstruction of justice for allegedly providing false information to the police about the incident.

As of Thursday, local authorities have not charged the child’s mother, though they suspect she was present during the attack, according to a report from the local Fox affiliate, WTXF.

The tragic sequence of events began on December 8 when police officers responded to a call at a residence on the 2100 block of South Beechwood Street, located in South Philadelphia. The details of who contacted the authorities and the specific reason for the visit remain unclear. Upon entering the home, officers discovered 2-year-old Key’Monnie Bean in the basement, unresponsive and suffering from severe physical injuries.

Tragically, despite being rushed to the Children’s Hospital of Philadelphia, the young girl was pronounced dead shortly after her arrival.

During a press conference providing updates on the investigation, prosecutors suggested the child may have been abused before the day of the attack. They also stated their belief that Hernandez — who also went by the alias Raafi Gorham — killed Key’Monnie, and that the other two people in the home went along with him in lying about what really happened.

“She obviously had signs of a very serious beating,” said Assistant District Attorney Ashley Toczylowski. “There’s also indications that there perhaps were objects used. … We also have preliminary information that perhaps her airway was compromised and perhaps she was suffocated in some way.”

Philadelphia District Attorney Larry Krasner was overcome with emotion as he talked about the case.

“You don’t have to be a parent…” he said while wiping his eyes. “We should be outraged at what happened to this 2-year-old.”

Ta’Shaun Walls, Key’Monnie’s father, told NBC’s Philadelphia affiliate WCAU in an interview shared by the attorney’s office that he hopes Hernandez “rots in jail” and “gets the max.”

He then addressed Key’Monnie’s mother.

“She watched all this happen,” Walls claimed. “I feel she should be in jail too and charged as well. She watched this man place hands on my daughter and did nothing about it. And then fled the scene and basically acted like she was nowhere to be found.”

Hernandez remains in jail; he has a preliminary hearing on his charges scheduled for Jan. 5, 2026.