A lawyer representing Twitter owner Elon Musk has sent a letter to Meta CEO Mark Zuckerberg regarding their newest platform Threads.

The letter from lawyer Alex Spiro who represents Musk alleges that Meta has committed “systematic, willful, and unlawful misappropriation of Twitter’s trade secrets and other intellectual property.”

Social media users were quick to point out similarities between Twitter and Threads when the latter launched earlier this week.

There have also been unverified allegations that former Twitter employees who came to Meta could have leaked trade secrets or worked on the project. Meta has responded by saying: ““No one on the Threads engineering team is a former Twitter employee, that’s just not a thing.”

Elon Musk has responded to the controversy on Twitter with: “Competition is fine, cheating is not”.