A former Snapchat employee alleges that the company has been faking its growth numbers in order to boost its value in an IPO, according to a lawsuit filed in L.A. Superior Court.

Anthony Pompliano, who was the company’s growth lead, alleges that he was fired after just three weeks with the company because he refused to go along with Snapchat’s plans.

Pompliano was hired away from a similar job at Facebook, Snapchat’s arch-rival. According to the lawsuit, Pompliano came to understand that he was only hired because Snapchat wished to obtain confidential and proprietary information from Facebook.

He said he was fired after blowing the whistle on the company’s misrepresentations with several higher-ups.

“Snapchat’s leadership saw Mr. Pompliano as an impediment to their planned IPO because he refused to turn a blind eye to Snapchat’s misrepresentations,” the lawsuit alleges.