Columbus police in riot gear were among the additional officers called to help with security at Broad and High Street where a group of about 250 protesters gathered on Sunday, June 21, 2020. During the afternoon protests, Columbus police used chemical agents to disperse the crowd. (Jim Woods/The Columbus Dispatch via AP)

COLUMBUS, Ohio (AP) — Police in Ohio’s capital city are investigating claims that officers maced a man with disabilities during a weekend rally, the mayor said Monday.

A viral video shows a man with prosthetic legs curled on the sidewalk as passers-by care for him and call for medical help.

“We are taking the matter very seriously and working diligently to find video, photos and additional information,” Mayor Andrew Ginther tweeted Monday afternoon.

Chemical spray was used Sunday after police say protesters moved from sidewalks to the streets in downtown Columbus and refused to disperse.

“We’re not talking about peaceful protests,” said Columbus police spokesman Sgt. James Fuqua. “We’re talking about demonstrators who are committing illegal acts.”

On Sunday, Ginther said the city encourages and respects peaceful protests, “but aggressive acts that put police and protesters in danger cannot be tolerated.”

Some protesters said the use of the spray was unwarranted and police overreacted.

“Some people got their cars blocked in for maybe five, 10 minutes at top, but they got escorted through,” Dejuan Sharp told WCMH-TV. “It’s nothing where this problem with all these cop cars to be out here, nothing for that.”

Columbus and cities nationwide and around the world have experienced multiple protests against racism and police brutality since George Floyd died at the hands of a Minneapolis police officer last month.

On June 16, Ginther issued an order prohibiting police use of tear gas and limiting their use of pepper spray to clear streets and disperse peaceful demonstrators.

Sunday’s use of chemical spray conflicted with those directives, said Shannon Hardin, Columbus City Council president.

“I ask all our peaceful protesters and police leadership to stay engaged to help keep the protests safe for all who want to use their voice to call for change,” Hardin said in a statement.