Baltimore dad Oscar Pineda, jailed after his two-month-old daughter died with multiple skull fractures, allegedly blamed Satan

A Baltimore plumber and a restaurant worker were charged after their 2-month-old daughter died with severe head trauma, according to charging documents.

Oscar Pineda, 21, and Katerin Monzon-Alvarado, 21, lived together at a home in Baltimore, court proceedings revealed.

Officers responded to Harbor Hospital in Baltimore around 1:08 a.m. on September 9, 2026, for a report of an infant death, police said.

Medical staff had recently pronounced a 2-month-old girl dead when officers arrived, according to police.

The victim was identified as 2-month-old Aida Mikea Monzon Alvarado, police said.

Doctors noticed severe bruising around the infant’s eyes and jawline and described the injuries as suspicious, charging documents state.

Hospital staff were unable to revive the child, according to court documents.

A later examination revealed significantly more serious trauma across the infant’s body, court documents state.

Aida suffered significant head and brain trauma, multiple skull fractures, frontal lobe hemorrhaging and a subdural hemorrhage, according to charging documents.

The Office of the Chief Medical Examiner recovered Aida’s remains, and preliminary findings indicated she had suffered trauma to her body, records state.

Investigators later learned that the parents had noticed bruising on the infant several days before her death, police said.

Monzon-Alvarado and Pineda allegedly told investigators they noticed bruising on their daughter on September 6, charging documents state.

The couple told authorities that Aida began vomiting the following day, charging documents state. Despite the bruising and vomiting, the parents did not seek medical treatment until the baby became unresponsive, prosecutors said.

Monzon-Alvarado initially told investigators that she had fed Aida and placed her face down on the couple’s bed, according to court records. She told police the baby later became unresponsive.

Prosecutors said Monzon-Alvarado described her daughter as “freezing and in shock” when she decided to take her to the hospital.

The parents gave completely different explanations for how their daughter may have been injured, investigators said.

Monzon-Alvarado told investigators that the couple’s 2-year-old son frequently jumped on the bed and suggested Aida may have fallen onto the floor because of him, prosecutors said. A prosecutor argued that the extent of the infant’s injuries could not have resulted from a single fall from the bed.

Pineda allegedly gave investigators a very different explanation for the injuries, according to charging documents.

Pineda claimed his daughter had been injured because of a “supernatural force” or because “Satan” had slammed a door on the child, charging documents state.

Following Aida’s death, homicide detectives went to the family’s home and took both parents into custody, police said.

Investigators interviewed Monzon-Alvarado and Pineda and formally charged both parents after consulting with prosecutors, according to police.

Monzon-Alvarado and Pineda were each charged with first-degree child abuse, second-degree child abuse, first-degree assault, second-degree assault and reckless endangerment, court documents show.

The current charges carry a maximum possible sentence of 55 years in prison, according to prosecutors.

Pineda worked as a plumber, while Monzon-Alvarado worked at a restaurant, court proceedings revealed. Pineda had lived at the Baltimore residence for approximately a year after previously living in Glen Burnie.

Neither parent has currently been charged with murder or another homicide offense, authorities said. Officials noted that additional homicide charges could be filed depending on the final results of Aida’s autopsy.

Police have not publicly identified which parent they believe inflicted Aida’s fatal injuries, and the final cause and manner of her death have not yet been announced, investigators said.

During separate bail hearings on September 11, prosecutors argued that both parents should remain jailed, court records show.

Monzon-Alvarado and Pineda are Guatemalan nationals, and prosecutors argued in court that they posed an “extreme flight risk.”

Monzon-Alvarado’s public defender said she denied harming her daughter and noted that investigators described the family’s home as orderly with no signs of neglect.

Judges ordered both defendants held without bail, court records show.