Elon Musk says he is taking legal action against the holder of a Twitter account that tracks his private jet, arguing it put his son at risk.
The @ElonJet account, which has more than half a million followers, was suspended on Wednesday.
Its owner Jack Sweeney, 20, used publicly available flight-tracking information to tweet every time Mr Musk's jet took off and landed.
Mr Musk says legal action is now being taken against Mr Sweeney and others.
"Last night, car carrying [his son] lil X in LA was followed by crazy stalker (thinking it was me), who later blocked car from moving and climbed onto hood," he tweeted.
He added that any account revealing people's real-time locations will be suspended "as it is a physical safety violation".
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