TL;DRClaude Guillemot, who co-founded Ubisoft in 1986 and led gaming peripherals maker Guillemot Corp, has died at 69 in a plane crash in western France.

Claude Guillemot, one of five brothers who co-founded Ubisoft in 1986, has died in a plane crash near the coastal town of La Baule in western France. He was 69. Guillemot and a flight instructor from Rennes were both killed when their twin-engine Cessna 421 crashed in a field near La Baule aerodrome on the afternoon of 19 June.

French authorities confirmed that the aircraft was on fire when emergency crews reached the scene. Guillemot, a member of a local flying club, had departed Rennes and was travelling to an aviation gathering that was expected to draw more than 100 aircraft to the area. The cause of the crash has not been determined, and an investigation is underway.

Ubisoft confirmed the death in a statement, saying the company was “deeply saddened to learn of the death of Claude Guillemot.” The five Guillemot brothers, Claude, Yves, Michel, Christian, and Gérard, founded Ubisoft on 28 March 1986 in the Brittany village of Carentoir. What began as a software distribution business grew into one of the largest video game publishers in the world, behind franchises including Assassin’s Creed, Far Cry, Just Dance, and the Tom Clancy series.