A 46-year-old man from Pennsylvania faces allegations of viciously assaulting his girlfriend’s infant daughter, reportedly striking the 3-month-old in the head during a heated early-morning dispute over a cellphone. The incident left the baby with a fractured skull and severe brain injuries.

Authorities have detained Luis Reyes-Pagan, charging him with aggravated assault, simple assault, and child endangerment related to the February 15 event, according to court documents. Kimberlyn Videa-Dubon, the infant’s 30-year-old mother, is also charged with similar offenses, including an additional harassment charge for her involvement.

Lancaster City Bureau of Police officers responded to a domestic violence call involving a child around 3:34 a.m. at a residence on Union Street, as reported by Lancaster Online.

Upon arrival, officers discovered the infant had sustained a severe head injury, allegedly due to a confrontation involving Reyes-Pagan and Videa-Dubon. Medical teams rushed the baby to Lancaster General Hospital. Given the seriousness of the injuries, she was later moved to Penn State Health Milton S. Hershey Medical Center for further care.

The Daily Voice reported that court documents confirm the child suffered a skull fracture along with intracranial bleeding.

Investigators indicate the altercation originated from a dispute concerning Reyes-Pagan’s cellphone, according to local NBC affiliate WGAL reporting.

According to charging documents, Reyes-Pagan told police that Videa-Dubon struck him multiple times while she was holding the infant. He claimed he responded by swinging his fist toward her, but accidentally hit the baby in the head. He admitted his conduct caused the child’s injuries, describing his actions as “reckless but provoked,” WGAL reported.

Authorities allege the infant was injured multiple times during the incident.

The Daily Voice reported that Videa-Dubon threw the baby onto a bed during the altercation, possibly causing the skull fracture. She is also accused of striking another person multiple times and hitting a third person in the face when they attempted to intervene.

Court records reportedly indicate that another child was inside the home at the time of the incident, though authorities have not said who that child is or where they are now.

The defendants were arraigned and released on $50,000 unsecured bail. They are both currently scheduled to appear in court again for their preliminary hearings on April 27.