India, Nov. 3 -- Where is Britney Spears? The pop icon, long known for her turbulent public life, has sparked concern again after mysteriously disappearing from Instagram. On Sunday, November 2, Britney's account suddenly became unavailable for fans. The move follows weeks of erratic and emotional posts that left fans alarmed - from cryptic captions about her sons, Jayden James, 19, and Sean Preston, 20, to videos showing bruises and bandages on her hands and arms.

For example, according to a People report, on October 7 she appeared in a video with visible injuries and explained that she had fallen down stairs. "My boys had to leave and go back to Maui," she wrote, referencing her sons who live in Hawaii with her ex-husband Kevin Federli...