Parrott said that Dwyer's boat was "struck" by another other vessel. "Don assured me that he did everything he could do to avoid the collision," Parrott wrote in an email to his colleagues in the General Assembly.
The Department of Natural Resources Police, which is investigating the accident, has not yet determined a cause. Police have released 911 tapes from witnesses, who said Dwyer's speedboat -- called The Legislator -- was at "full throttle" just prior to the collision.
The Legislator sank after the accident.
Dwyer spoke briefly to reporters last week just before he was released from the University of Maryland Shock Trauma Center. At that time, Dwyer asked for forgiveness and admitted that he had a .20 blood alcohol level -- more than twice the legal limit.
He has not responded to multiple requests for interviews -- and has spoken to few of his House colleagues.
Parrott, who serves with Dwyer on the House Judiciary Committee, said that Dwyer broke his neck and foot in the accident and had "several lacerations that required stitches."