Protesters march toward City Hall to demonstrate the police-custody death of Freddie Gray, Thursday, April 30, 2015, in Baltimore. Baltimore police say they have turned over their criminal investigation to a prosecutor who will decide whether charges are warranted in the death of Freddie Gray.

Scant details from Gray death probe disappoint protesters

Baltimore Police Commissioner Anthony Batts said the department dedicated more than 30 detectives to working on the case and report.