Bangladesh Time: Police in the US city of Baltimore say that a van transporting Freddie Gray made a previously undisclosed stop while en route to the police station.
Gray suffered fatal and unexplained spinal injuries while in police custody, sparking two weeks of protests that turned violent earlier this week.
On Thursday, there were rallies in Baltimore, Philadelphia and Cincinnati.
A national debate over the use of lethal police force has been going on since last summer.
Police investigating Gray's death said they found out about the new van stop from a security camera.
"We discovered this new stop based on our thorough and comprehensive and on-going review of all CCTV cameras and privately owned cameras," Deputy Police Commissioner Kevin Davis said.
"This new stop was discovered from a privately-owned camera."
The new video was filmed by a CCTV camera outside a small Korean food shop.
The shop's owner, Jung Hyun Hwang told the Associated Press news agency that police officers visited last week to make a copy of the recording - which was later lost when the shop was looted during the riots.
Mr Hwang said he had not viewed the recording and did not know what it showed.
Investigators have now handed over their inquiry into Gray's death to the state's attorney's office.
The city's top prosecutor, Marilyn Mosby, will now decide whether to take the case to a grand jury to seek an indictment of any of the six officers involved.
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