The Twitter hijack of Tesla account was noticed at 5 PM ET when it tweeted that Tesla was no longer in control of the Twitter account. The subsequent tweets suggest prank from the hijackers because they posted a phone number and told Tesla Twitter followers that those who called on that number could get a free car. The hackers also change the Tesla account name was changed to #RIPPRGANG.
The hackers also managed to hack into Tesla website at www.teslamotors.com. They redirected visitors to a defaced website using DNS redirect hack.
The hackers also hacked the Elon Musk Twitter account and used it in the same way as Tesla hijack.
All the Twitter accounts and the website have been since restored to their original owners.