RIVERHEAD - The man accused of boating while intoxicated and killing a West Islip dad was arraigned this morning on a 19-count indictment. Investigators say 27-year-old Brian Andreski's blood alcohol level was more than twice the legal limit when he hit a fishing boat near Robert Moses Causeway in June. The grand jury indictment unsealed today claims that Andreski also had cocaine in his system at the time of the crash.Christopher Mannino, a 39-year-old father of three, fell overboard when Andreski's speedboat crashed violently into his own boat. Mannino died from head injuries.Andreski is now facing upgraded charges that include aggravated vehicular homicide and vehicular manslaughter. Officials say it's the first time in New York state that any boater has been charged with aggravated vehicular homicide. Prosecutors say they will be seeking the maximum sentence of 25 years in prison. Andreski pleaded not guilty and was ordered held on $250,000 cash bail or $500,000 bond. Officials crack down on BWI in wake of deadly crashPolice: Body of missing boater found under Robert Moses CausewayFuneral held for man killed in suspected drunk boating crash