Twitter said it would be closing all its offices until Monday, according to an email shared by a departing employee, after a new wave of employees resigned when Elon Musk issued an ultimatum telling them they would need to be willing to commit to a “hardcore” work environment.

“Please continue to comply with company policy by refraining from discussing confidential company information on social media, with the press or elsewhere,” the email shared with CNBC on Thursday said.

Internal Slack messages also shared with CNBC showed engineers and other employees posting goodbye messages to a “watercooler” chat group in the run-up to the 5 p.m. ET Thursday deadline Musk set Wednesday. 

Read the rest of the story at NBC News