Uber boss Travis Kalanick's mother dies in boating accident

Bonnie Kalanick, 71, was out on lake with husband Donald, 78, in Fresno, California, when boat reportedly hit a rock and sank

The mother of Travis Kalanick, CEO of Uber, has died in a boating accident. Bonnie Kalanick, 71, died after the boat she and her husband, Donald, 78, were riding hit a rock in Pine Flat Lake in Fresno county, California, authorities said.

The couple from the Los Angeles neighborhood of Northridge have been longtime boaters. In a memo to Uber staff, Liane Hornsey, the chief human resources officer, called the incident an "unthinkable tragedy". She wrote that "everyone in the Uber family knows how incredibly close Travis is to his parents".