In December, ByteDance confirmed it fired four employees who used TikTok to spy on the locations of two journalists. Now, Forbes reports the FBI and the Department of Justice have been investigating the incident. This investigation couldn’t come at a worse time, as ByteDance faces mounting pressure to sell its stake in TikTok.

Critics in Congress have previously raised questions about the app’s surveillance tactics, particularly in light of ByteDance’s acknowledgment that employees had inappropriately accessed US user data. "We have strongly condemned the actions of the individuals found to have been involved, and they are no longer employed at ByteDance,” a spokesperson said. “Our internal investigation is still ongoing, and we will cooperate with any official investigations when brought to us."