The next police officer scheduled to stand trial in the death of a 25-year-old black man is asking for his case to be dismissed.

Citing court records, The Baltimore Sun (http://bsun.md/28YjVI5 ) reported Tuesday that Lt. Brian Rice cited what he says are defects in the prosecution's case. Rice is the highest-ranking officer charged in the case. He's also asking prosecutors to disclose grand jury minutes and testimony.

Freddie Gray died last year after his neck was broken in a police transport van, sparking protests and unrest. Rice is charged with involuntary manslaughter, second-degree assault, reckless endangerment and misconduct in office. His trial is set to begin July 5.

Last week, a judge acquitted the van's driver, who had faced the most serious charges, including second-degree murder.