This comes after Mladic was ordered out of his own arraignment for repeatedly interrupting the proceedings and refusing to enter pleas.
Mladic disrupted the hearing several times, arguing that he should be allowed to choose his own lawyers. He put on a cap, defying the rules of the courtroom. He gestured to the packed public gallery despite a judge ordering him not to.
Mladic was arrested in May after 16 years on the run. He's charged with the 1995 massacre of around 8,000 Muslims in Bosnia.
The 69-year-old's courtroom theatrics came at the start of a solemn week for survivors of the Srebrenica massacre he is accused of orchestrating, as officials prepare to rebury 600 people whose remains were dug out of mass graves in the past year and identified using DNA tests.
On July 11, the bodies unearthed in the hills surrounding Srebrenica will be laid to rest at a cemetery for victims of the mass executions as thousands remember their lost relatives.
The Associated Press contributed to this story.