A man found holding a knife outside a house who then retreated inside Tuesday morning in Old Bridge was arrested after hours of negotiations with police, investigators said. Officers were called to a home on Pensacola Street around 6:30 a.m. for a report of a disturbance and found the 49-year-old man with the weapon, according to a joint statement from the Middlesex County Prosecutor’s Office and the Old Bridge Police Department. Police said they tried to deescalate the situation, but man retreated into the house, the office said. After hours of negotiations the incident ended peacefully, and …