Crews worked Sunday morning to move the wreckage from the sit and into a hangar at Monroe Regional Airport.
National Transportation Safety Board officials arrived just after 3 p.m. Friday afternoon, and were still on-site this weekend working the scene.
The NTSB will hold a news conference Monday morning to discuss the crash.
Four victims, Don Thompson, Dean Hart Sr., and Max Larche -- all from Northeast Louisiana --
and the pilot, Mason Maudlin of Little Rock -- died after their plane went down Thursday afternoon.
The investigation is now in the hands of the Federal Aviation Administration and the NTSB.
There is no time frame yet on when the investigation will be complete.