Twitter Inc. CEO Elon Musk has called engineers to the company's offices in San Francisco, said CNBC on Friday after having access to internal company emails.

Axar.az reports that although the offices will be closed for the rest of the Twitter staff until November 21, Musk asked engineers to come to the company headquarters for "short, technical interviews" to help him "better understand the Twitter tech stack," according to the report.

The engineers in question were also told to deliver a "high-level report of the best code that they have worked on in the last six months," the media outlet also reported.