The year is almost over but SpaceX is still dealing with its worst "anomaly" to date -- the explosion of a Falcon 9 rocket last September. But before 2016 bids farewell, Elon Musk and his commercial space flight company is expected to release a preliminary report about the incident.

Space Exploration Technologies (SpaceX) will give its preliminary investigations report to the federal authorities to identify the cause of the Sept. 1 explosion at Cape Canaveral Air Force Base launch pad, according to The Wall Street Journal.

The explosion put all SpaceX launches on hold while the authorities investigate the cause of the blast. Although there were several theories as to what have caused the explosion, including a malicious sabotage angle, SpaceX and Elon Musk believe it was an internal glitch that could have caused the unfortunate incident.

SpaceX believes it could be an internal problem with the rocket's tank system that caused the blast. One viable cause is the cooled liquid fuel being transferred to the tank. The supercooled fuel might have gotten too cold and solidified making it impossible to transfer inside the tank that then caused the explosion.

This could have caused a rupture in the pressurized tank inside the rocket. Although Wall Street Journal said a preliminary investigation report will be released by SpaceX, the company said that a 'Final report' will be given to the authorities instead to convince them the problem was properly identified and will be dealt with. SpaceX will also outline the steps they would take to prevent the incident from happening again.

"We're finalizing the investigation and its accompanying report, and aim to return to flight in December", a SpaceX spokesperson said in a press release.

The Federal Aviation Administration will review and approve the final SpaceX report. The fate of SpaceX launches will depend on the federal authorities. But the company is confident that they can soon resume launching pending flights after the final report was reviewed and approved before the year ends.