The Fresno County Sheriff's Office says Kalanick's parents, Donald and Bonnie, both in their 70s, were out at Pine Flat Lake when their boat struck a rock and sank.
Passing boaters noticed the debris field hours later and notified authorities. A sheriff's office helicopter spotted the couple, but by the time rescuers reached them, Bonnie was found dead. Donald was transported to Community Regional Medical Center where he is expected to survive.
THE ORIGINAL STORY:
Uber issued the following statement regarding the accident:
"Last night Travis and his family suffered an unspeakable tragedy. His mother passed away in a devastating boating accident near Fresno and his father is in serious condition. Our thoughts and prayers are with Travis and his family in this heartbreaking time."
Uber was founded in 2009 by Kalanick and Garrett Camp.
The two victims are also the parents of Fresno firefighter Cory Kalanick. He was hailed as one of the heroic firefighters who saved Capt. Pete Dern when he fell into a burning Fresno home in 2015.
The Fresno Fire Department isn't commenting about Kalanick's loss at this time.