Tyler Sullivan, 30, of Bristol Borough, on Wednesday pleaded guilty to third-degree murder and endangering the welfare of a child in the death of his 4-month-old son in May 2023.Bucks County Common …

Tyler Sullivan, 30, of Bristol Borough, on Wednesday pleaded guilty to third-degree murder and endangering the welfare of a child in the death of his 4-month-old son in May 2023.Bucks County Common …