A protester faces off with police the night after citywide riots over the death of Freddie Gray on April 28, 2015 in Baltimore, Maryland. (AFP)
Police in Baltimore fired smoke bombs and pepper pellets at hundreds of protesters who defied a night-time curfew that took effect across the city late Tuesday, police and US media said.
"Officers are now deploying pepper balls at the aggressive crowd at North Ave/Pennsylvania Ave," police tweeted, while CNN and other television news stations said that officers also used smoke bombs in a bid to enforce a 10:00 pm (0200 GMT Wednesday) curfew.