Real estate tycoon Steven Posner and one other died Monday in a high-speed boat crash that killed another man and critically injured his cousin.
Steven Posner's daughter, Dr. Kelly Posner-Gerstenhaber, confirmed Monday evening that her father died in a boating incident earlier that day. Posner-Gerstenhaber was still trying to find out details about the collision.
Just after 1 p.m. the two boats collided at high speed a mile or two east of Matheson Hammock Marina. Stuart Posner, also injured in the crash, was Steven Posner's cousin.