Baltimore Police Department Commissioner Anthony Batts announced Thursday that the results of the department's investigation into the death of Freddie Gray — who died after he was critically injured in police custody — have been turned over to a state prosecutor.

Batts told reporters that during the course of the investigation, 30 detectives were dedicated to focus on the case as their “full-time job.”

The commissioner stressed that the investigation is still not over and that “if new evidence is found, we will follow it,” going on to say that Gray's family and the community “deserve transparency and truth.”

“I understand the frustration and the sense of urgency,” Batts said.

Baltimore Deputy Police Commissioner Kevin Davis said at the same press conference that officials had discovered, as part of their investigation, that the police van carrying Gray had made a second stop, which was found on a privately owned security camera. Officials had previously said that the van transporting Gray had made at least one stop. He did not elaborate further.

On Thursday evening, A rally of about 1,000 people in Philadelphia briefly turned tense as protesters tried to march onto a highway and were blocked by police, who reported making three or four arrests, then releasing two of the people, according to the Philidelphia Inquirer. A crowd of about 300 people gathered in Cincinnati, according to Cincinnati. com. And in Milwaukee, a small group marched to mark the one-year anniversay of the death of Dontre Hamilton, shot 14 times by police after a struggle in a downtown park.

The night before hundreds of people rallied and marched overnight in cities across the U.S. including Boston and New York — where more than 100 people were arrested — as outrage spread over the death of Gray.

Back in Baltimore the night was relatively calm after initial violence earlier this week, though police said 18 more people were arrested during peaceful protests Wednesday.

Solidarity protests were also held in Houston, Indianapolis, Minneapolis and Washington.

Also on Thursday, Baltimore officials were also trying to tamp down expectations and rumors that a final decision on what will happen to the six Baltimore police officers in the Gray case — who remain suspended with pay — would come by Friday.

The New York City Police Department confirmed that more than 100 arrests were made in New York on Wednesday night. The arrests came after police used a loudspeaker to warn demonstrators they would be taken into custody if they marched in the street. The NYPD said most of the arrests were for disorderly conduct.