Why Austrian extreme athlete Felix Baumgartner crashed with his paraglider remains unclear. However, prosecutors are now certain that the 54-year-old died on impact.

The famous adventurer died while paragliding on Italy’s Adriatic coast. His legacy includes a number of world records—including his iconic jump to Earth from the edge of space.

Felix Baumgartner, the Austrian extreme adventurer who hurtled to earth from more than 24 miles high in 2012 and became the first human to break the sound barrier while free-falling, died on Thursday in a paragliding accident along the Adriatic coast in Italy. He was 56.