“Overnight, MPD had 6 members with reported injuries in connection with the demonstrations," the spokesperson said.
Meanwhile, police have arrested 10 people in protest-related incidents since Tuesday afternoon, MPD said in a morning police report.
The US Congress is due to certify President-elect Joe Biden's victory in the November election later in the day. Trump supporters have been flocking to Washington from all across the country since the weekend to attend a rally where the incumbent president is scheduled to speak at 11 a.m. ET (16.00 GMT) and call for overturning the election results.