WATCH: Video Shows Roy Halladay's Final Moments Before Fatal Plane Crash

Newly released footage showed what appeared to be former Toronto Blue Jays pitcher Roy Halladay’s plane flying very close to the water off the Florida coast in the Gulf of Mexico shortly before his fatal crash Tuesday.

The video shot by an unidentified man and obtained by TMZ showed the 40-year-old former baseball player and amateur pilot of three years alternating between flying high and coming close to the water before the “high-energy impact” crushed his special-edition Icon A5 amphibious plane and ended his life.

The pitcher’s aircraft went down about 10 miles off the coast of St. Petersburg. He reportedly was piloting the plane and was the only passenger.

Another clip from the footage showed a group of people, who were eyewitnesses to the incident, racing by boat towards the wreckage, which was seen floating on the water.

The exact events leading up to Halladay’s crash remained unclear, but witnesses told TMZ he had been hot-dogging by 'dramatically increasing and decreasing in elevation' before the crash.

Another witness who was not named said: 'He was flying like that all week. Aggressively.'

The responders called 911 and waited for help to arrive, TMZ said. Pasco County authorities later confirmed Halladay was killed in the crash.

New York Daily News quoted National Transportation Safety Board Investigator Noreen Price during a news conference in New Port Richey, Florida, saying an investigation was launched into the cause of the crash.

“Every accident is different. They are very complex. So as we move forward in the factual finding phase, if we see anything that we believe might connect it to previous accidents, we will certainly look at that,” Price said.