Dan Fredinburg, a senior executive at Google, was one of the people confirmed killed on Mount Everest in an avalanche triggered by the 7.8 magnitude earthquake that hit Nepal on Saturday. At least 17 climbers died on the mountain.

Sophia Bush, Dan Fredinburg

Fredinburg’s sister confirmed his death in an Instagram post:

“This is Dans little sister Megan. I regret to inform all who loved him that during the avalanche on Everest early this morning our Dan suffered from a major head injury and didn’t make it. We appreciate all of the love that has been sent our way thus far and know his soul and his spirit will live on in so many of us,” Fredinburg’s sister, Megan, posted. “All our love and thanks to those who shared this life with our favorite hilarious strong willed man. He was and is everything to us. Thank you.”

Tom Briggs, marketing director for Jagged Globe, a Sheffield-based climbing and adventure company, confirmed the news “with the greatest sorrow”.

“Our thoughts and prayers go out to Dan’s family and friends whilst we pray too for all those who have lost their lives in one of the greatest tragedies ever to hit this Himalayan nation,” it reads in part.

Fredinburg started at Google since 2007. He served as product manager and the head of privacy at Google X.