Sia and estranged husband Dan Bernad’s ongoing divorce is getting messier.

According to court documents obtained by Us Weekly on Tuesday, October 28, Bernad has filed for sole legal and physical custody of his and Sia’s 19-month-old son, Summi. Bernad requested that Sia have “monitored visitation” three times per week. He also asked for Sia, 49, to “submit to random and regular drug testing” and sobriety testing prior to each supervised visit.

Bernad claimed that Sia “is a serious and immediate danger” to their son. He alleged that the pop star was secretly hospitalized for two weeks in September and tested positive for barbiturates and benzodiazepines.

“Sia is an unfit and unreliable parent struggling with substance abuse and addiction, rendering her incapable of providing safe or stab

See Full Page