In a motion, the assistant U.S. attorney says the U.S. is awaiting responses for requests for physical evidence in several foreign countries.
The U.S. is seeking records in the United Kingdom, Australia and French Saint Martin.
In addition, it is seeking the testimonies of witnesses in Australia, Bonaire, France and French Saint Martin.
The U.S. says it plans to talk to the surveyor who examined Bennett's catamaran "Surf into Summer" before he purchased it in 2016.
The U.S. Attorney’s Office claims Bennett punctured holes in the hull of the boat to intentionally sink it the night his wife went missing from the boat.
Bennett said he and his wife had left Cuba and were traveling to the Keys when he was awoken by a loud thud. He said when he searched for his wife at the helm of the boat she was gone.
The U.S. Attorney's motion says Bennett addressed "the sail, engaged the engines and got the vessel underway."
The motion says Bennett then noticed the boat was taking on water and gathered his personal belongings to deploy his life raft. He told "law enforcement that he estimated the total time from being awakened until abandoning ship was between 45 minutes to one hour."
The motion says the U.S. is trying to obtain financial documents of Bennett’s and Hellmann's, specifically from a bank account in Australia the U.S. believes could have evidence of a “monetary incentive for the defendant to murder Ms. Hellmann."
The U.S. is requesting that the trial be continued to at least February 2019 and that a status conference is held at least two months before the new trial date.