Musk responded on Sunday in a freakish series of tweets referring to Unsworth, without using his name, as "pedo guy".
Unsworth said he would talk to lawyers about a possible lawsuit against Musk upon returning to Britain. "I believe he's called me a paedophile", he toldjournalists. "I think people realise what sort of guy [Musk] is".
The BBC has contacted Mr Musk, via his company Tesla, for comment. But the boys were saved by a volunteer rescue team.
Since then, he has been arguing with people who accuse him of shoehorning himself into the drama and imagining hypotheticals in which rescuers had not deemed his hastily built submarine unnecessary and impractical.
The drama comes amid a crisis at Tesla, which has yet to prove that profitable, high-quality mass production of its Model 3 electric sedan is achievable.
What's weird about Musk's tweet is that it came on July 15, a full five days after the boys were rescued. He has even called the beloved Thai rescue chief commander "not the subject matter expert" in response to the leader's comments regarding the practicality of Musk's submarine.
The investors went on to say that Musk's behavior was "fueling an unhelpful perception" of his leadership - calling it "thin-skinned and short-tempered".
Though Musk later deleted the tweet, he also later tweeted out another now-deleted message saying he'd bet a signed dollar that his claim of pedophilia was correct.
Tesla stock plunged 3% on Monday on news that Musk called the diver a "pedophile guy" and of his controversial political contributions to Republican campaign groups. The company's managing director tweeted:"All it takes is a public apology Mr Musk and i will reverse our decision".
"I'm not going to make any further comment about him", Unsworth continued. When asked about whether he would consider pressing charges against the billionaire for damaging his reputation he reportedly responded, "Yes, it's not finished".
Munster said this Twitter exchange with Unsworth "crossed the line".
He said Mr Musk appeared to be following in the footsteps of US President Donald Trump in using Twitter to vent frustration and insult anyone with whom he disagrees.
James Anderson, one of the largest shareholders in Tesla, told the Guardian that he planned to convey his concerns to the company.
The Aussie, considered a liquid proxy for China-related trades, fell 0.5 per cent against the dollar to US$0.7422. S&P 500 and Dow futures dropped around 1 percent, pointing to a weak opening on Wall Street later on Wednesday.
She speaks Croatian, English, Spanish and Portuguese fluently while she has basic understanding of German, French and Italian. On top of that, it was Croatia's Luka Modrić, and not France's Antoine Griezmann, who was given the honour of tournament MVP.
His kick was deflected off the head of Croatia's Mario Mandzukic in the 18th minute for an own goal to get France on the board. The French "golden generation" has brought home France's second World Cup trophy.
The sporting event marked the Duchesses' first outing together since the former Suits actress Wednesday Prince Harry in May. The pair had an overnight stay aboard the Royal Train before attending Royal Ascot, which was her Royal Ascot debut.
Brown noted she didn't have speed detection while another officer said they didn't have any tickets left to hand out. It was determined that 24-year-old Sarah Webb (Sarah Webb) should be released, but the officers still detained her.
Some had also lost as much as 5kg but had regained some of the weight, and their appetites, in hospital, Dr Piyasakol said. He collapsed and died on July 6 while diving; according to some officials, his own oxygen supply ran out.
Southgate added: "I thought Stones was absolutely outstanding and [goalkeeper Jordan] Pickford has had a wonderful tournament. Manager Zlatko Dalic nevertheless said: "We want the whole world to watch Croatia play".
Gareth Southgate has been promised free pizza for life after guiding England to the World Cup semi-final in Russian Federation . The two were seen reuniting after the game, kissing and embracing among empty seats, later joined by family members.
We are still investigating, and no animals will be housed in this enclosure until the investigation and repairs are completed. In 2016, 38-year-old zookeeper Stacey Konwiser was killed by a tiger while preparing the "night house" at the Palm Beach Zoo.
When Prince Louis is baptised on Monday at the Chapel Royal, the Duke and Duchess of Cambridge are expected to keep to convention. Guests included Prince Charles and his wife Camilla as well as Prince Harry and his new wife Meghan Markle .
Thai soccer boys weren't able to watch World Cup live
Gunan was one of about 80 current and former Thai Navy SEALs who made up the bulk of the divers involved in the rescue effort. Dr Harris assessed the boys and decided they were up to the task of making the trek out of the cave after being sedated.
Trump and Putin meeting in Helsinki
The U.S. said Trump opened the meeting by pressing Putin on Russian election meddling and that Putin denied being involved. But he told CBS that he was going into it with " low expectations ". "He's been very nice to me the times I've met him".
Martinez: Belgium Beaten By A Bit Of French Luck
For months, Deschamps has been downplaying expectations by making out that France's youth was a drawback, not its strength. A portent sign perhaps - the last time three French defenders scored at a World Cup was in 1998.
Trump brands Russian Federation a 'foe' ahead of Putin summit
Asked if Trump felt the queen had liked him, he said: "Well I don't want to speak for her, but I can tell you I liked her". The president also met with Queen Elizabeth II and later spoke favorably about her, calling her a " tremendous woman ".
Donald Trump Meets Queen Elizabeth At Windsor Castle
HRH has met with every sitting president since ascending to the throne in 1952, with the exception of Lyndon Johnson. Trump said May could not now walk away from negotiations with Brussels "because if she walks away she's stuck".