United Kingdom, March 1 -- Michael Jackson's estate is being sued for child sex trafficking.

Siblings Edward, Dominic, Marie-Nicole and Aldo Cascio are suing the late King of Pop's estate after alleging that Jackson "groomed and brainwashed" them when they were minors.

In a legal complaint obtained by PEOPLE, the siblings allege they met Jackson through their father, who worked at a luxury hotel visited by the late star.

They claim Jackson went on to supply them with drugs and alcohol, expose them to pornography and abuse them.

The complaint alleges: "Michael Jackson was a serial child predator who, over the course of more than a decade, drugged, raped and sexually assaulted each of the plaintiffs, beginning when some were as young as...