As more and more women speak up about their experiences of sexual harrasment, Randi Zuckerberg, sister of Facebook's Mark Zuckerberg, has tweeted about a recent trip where she was sexually harrassed on a plane.

The Silicon Valley entrepreneur wrote a letter to Alaska Airlines, which she then tweeted, detailing how the man she sat next to on her flight from Los Angeles to Mexico "began making expicit, lewd and highly offensive sexual comments to me".

The man's behaviour - in a very public setting - included rating female passengers' bodies and "talking to [Zuckerberg] about touching himself".

She alerted airline staff to the situation but was told "that this guy was a frequent Alaska Airlines traveler...but oh well don't take it personally, this guy just doesn't have a filter." This led to Zuckerberg tweeting her letter in which she asked if "his $ means more than our safety?"

Feeling disgusted & degraded after an @AlaskaAir flight where the passenger next to me made repeated lewd sexual remarks. The flight attendants told me he was a frequent flier, brushed off his behavior & kept giving him drinks. I guess his $ means more than our safety? My letter: pic.twitter.com/xOkDpb0dYU

— Randi Zuckerberg (@randizuckerberg) November 30, 2017

The airline replied in a tweet: "What you have shared with us is very disturbing. We have launched an investigation and have revoked this passenger's travel privileges pending the outcome of that investigation."

Zuckerberg, who runs production company and marketing firm Zuckerberg Media, created the live video streaming application Facebook Live. Not one to shy away from the public eye or female empowerment, she is also executive producer of Dot, a girl-power children’s TV show and founder Sue’s Tech Kitchen.