Brian Littrell is suing a Florida sheriff's office for failing to protect his private beach.

The Backstreet Boys member filed a lawsuit last month via his BLB Beach Hut, LLC company, in which he alleged the Walton County Sheriff's Office have failed to enforce his private property rights because they didn't kick trespassers off his area of the cost.

According to documents seen by Entertainment Weekly, Brian had previously executed a Trespass Authorisation Form, which enabled law enforcement to act in his stead in respect to his property rights and is now seeking a writ of mandamus which would compel government officials and agencies to execute the functions they have been legally mandated to carry out.

The 50-year-old singer claimed he and his family had put up 'No Trespassing' signs, as well as attempting to mark out their boundary line with chairs, tables and umbrellas, but despite his efforts, "numerous trespassers have set out to antagonize, bully, and harass the Littrell family."

Brian and his wife Leighanne Wallace - who have 22-year-old son Baylee together - hired private security to protect their beach but began to rely on the sheriff's office, which the Quit Playing Games hitmaker alleged had "refused to do their duty".

One specific incident is cited in the lawsuit, in which a sheriff's officer was dispatched to remove a trespasser but was allegedly captured on body camera footage telling the member of the public that he "doesn't agree with private beaches" and branding Brian's behaviour "lunacy".

Another instance allegedly saw a 911 call handler hang up when a BLB Beach Hut employee called to report a "battery and theft" carried out by an individual who had refused to leave the private area.

Brian's lawsuit seeks judicial involvement to force the sheriff's office to act.

It cites "unprecedented times" and warns that if the Walton County Sheriff's Office allegedly continues to ignore its duties to the Littrell family beach, "private property and other rights held by Florida citizens will only exist on paper."