PORTO SANT'ELIPIDO, Italy — Beachgoers knew something was wrong when they heard a loud boom ring out as a paraglider spun out of control, killing its only occupant, extreme athlete Felix Baumgartner, when it crashed next to a swimming pool near the Adriatic Sea.
A 30-year-old mother watched the deadly descent unfold Thursday afternoon from nearby with her two young children, who were entranced by the constant traffic of paragliders above the beach town of Porto Sant'Elipido in central Italy's Marche region.
''Everything was normal, then it started to spin like a top,'' Mirella Ivanov said Friday. ''It went down and we heard a roar. In fact, I turned around because I thought it crashed on the rocks. Then I saw two lifeguards running, people who were running toward'' the crash site.
When she saw people trying to revive the occupant, she scurried her two children away.
The city's mayor confirmed the death of 56-year-old Baumgartner, who was renowned as the first skydiver to fall faster than the speed of sound. The cause of the paragliding accident was under investigation. Police did not return calls asking for comment.
''It is a destiny that is very hard to comprehend for a man who has broke all kinds of records, who has been an icon of flight, and who traveled through space,'' Mayor Massimiliano Ciarpella told The Associated Press.
Ciarpella said that Baumgartner had been in the area on vacation, and that investigators believed he may have fallen ill during the fatal flight.
Baumgartner's social media feed features videos of him in recent days flying on a motorized paraglider —known as paramotoring — above seaside towns, and taking off from a nearby airfield surrounded by cornfields.