Aug. 31, 7:43 a.m.: Southampton Town police identified the victim late Sunday night as Paul Hansen, 53, of Sag Harbor. Mr. Hansen was a real estate salesman with Douglas Elliman in Sag Harbor and was the father of two.Police also said, in a press release, that Mr. Ludwick had lost control of his Porsche, crashing it into a telephone pole on Rolling Hills Court East. Mr. Hansen was pronounced dead at the accident scene. Mr. Ludwick has been charged with driving while intoxicated, a misdemeanor, and leaving the scene of an accident, a felony. He will be arraigned Monday morning in Southampton Town Justice Court. Detectives have asked that anyone with information about the accident call 631-702-2230 or Crime Stoppers at 800-220-TIPS.Aug. 30, 7:40 p.m.: Sean P. Ludwick, a former partner in BlackHouse Development, a New York City real estate firm, was charged with drunken driving early Sunday morning following a one-car crash in which his passenger was killed.Sgt. Steve Miller of the Southampton Town Police Department said that Mr. Ludwick, 42, who owns a house in Sag Harbor, was being held at police headquarters, awaiting arraignment Monday morning at Southampton Justice Court in Hampton Bays. Police have not yet released the name of the victim.Mr. Ludwick was driving a Porsche on Rolling Hills Court in Noyac shortly before 2 a.m., Sergeant Miller said, when the crash occurred. In addition to the drunken-driving charge, police charged Mr. Ludwick with leaving the scene of an accident in which a fatality occurred. He was arrested a little over an hour after the crash. Police gave no further particulars.Mr. Ludwick has been in trouble with the law at least twice over the past two years, both times on charges of domestic violence, once in Martha's Vineyard and once in Manhattan.