A Bristol Borough man pleaded guilty on Wednesday, May 29, 2024, to killing his 4-month-old son and will face sentencing later this summer.

Tyler Sullivan, 30, entered guilty pleas to third-degree murder and endangering the welfare of a child before Common Pleas Judge Gary B. Gilman. His sentencing was scheduled for August 27.

Officers with the Bristol Borough Police Department were dispatched at 11:35 p.m. on May 24, 2023, to 1038 Radcliffe Street for a 4-month-old child in cardiac arrest.

When officers arrived, the baby was not breathing and cold to the touch. Police officers administered CPR, and the baby was transported to Lower Bucks Hospital where he was pronounced dead at 12:01 a.m.

A doctor examined the baby, noting the baby suffered several injuries, including contusions, bruising and abrasions throughout his body. The doctor noted that the injuries were indicative of a battered child. The doctor also said the baby was already deceased when he arrived to the hospital.

The investigation concluded that Sullivan violently shook the baby on at least two occasions on May 24, 2023, and at least six additional times in the six weeks prior.

This case was investigated by Detectives with the Bucks County District Attorney’s Office and the Bristol Borough Police Department and was prosecuted by Chief Deputy District Attorney Matthew Lannetti and Assistant District Attorney David O’Beirne.

Media Contact: Manuel Gamiz Jr., 215.348.6298, mgamiz@buckscounty.org