1:50 PM PT -- A spokesperson for LAPD tells TMZ the department's threat management division is looking into the incident and is in touch with Elon's team ... as of now, there has not been an official report filed.
Elon Musk claims a "crazy stalker" put his son in danger, and now the Twitter honcho's threatening to take legal action against someone who's publicly exposing his location ... which he believes led to the attack.
Elon tweeted Wednesday night that a car carrying his 2-year-old boy, "lil X," was followed by an unknown person ... adding they later blocked the vehicle and climbed onto the hood.
He also posted a clip of the alleged stalker, showing their license plate -- asking "Anyone recognize this person or car?"
Elon Musk Threatens to Sue Twitter Employees Who Break NDAs Amid Leaks
In a clearly related move, he says legal action's being taken against programmer Jack Sweeney, the person who started Elon's flight-tracking account in 2020.
This call-out came shortly after Elon dropped a new rule for Twitter -- "Any account doxxing real-time location info of anyone will be suspended, as it is a physical safety violation. This includes posting links to sites with real-time location info."
Elon notes people are allowed to post locations someone's been at on a "slightly delayed basis," saying it isn't a safety problem.
Jack's account has since been suspended, and many online see that move as a sign Elon's free speech pledge is a one-way street -- as soon as the "free speech" harmed him, he shut it down.
FYI -- Jack claimed Elon messaged him last year, offering him $5K to take the account down ... but after acquiring Twitter, Elon said he wouldn't touch the tracking account. Of course, that ain't the case anymore.