Los Angeles, Nov. 3 -- Singer Britney Spears has deleted her Instagram account after sharing a series of worrying posts in recent weeks.

According to People, Spears' account became unavailable on Sunday, November 2. When fans tried to visit her profile, a message appeared saying her "profile may have been removed."

The pop star's disappearance from Instagram comes amid public concern and a dispute involving her ex-husband Kevin Federline's memoir.

Fans had recently expressed their concern after the 43-year-old singer posted dancing videos with captions that mentioned her sons, Jayden James, 19, and Sean Preston, 20. Spears also turned off comments on those posts.

Last month, she shared a video showing bruises on her arms and bandages ...