San Francisco: A giant X sign has appeared on the roof of Twitter's headquarters in San Francisco, the United States, as part of the social media platform's ongoing rebrand, a video posted by US billionaire entrepreneur Elon Musk showed.
City officials opened a complaint and launched an investigation into the installation of the sign, saying that such works require a permit for safety reasons, The New York Times reported on Saturday.
On Monday, Twitter changed its logo from a blue bird to a black-and-white X logo. Musk specified that the new logo symbolized "the imperfections in us all that make us unique." (UNI)
