The incident comes as Trump's unsuccessful primary challengers are set to take the stage at the Republican Party convention on Tuesday, in an act of support for the party's leading figure and newly appointed US presidential candidate.

Ohio police officers attending the Republican National Convention in Wisconsin shot and killed two knife-wielding men at the convention. The man, identified as 43-year-old Samuel Sharp, had a knife in each hand and defied police commands, charging at the unarmed man before officers eventually opened fire. Five members of the Columbus, Ohio, police department fired their weapons in response to an imminent threat posed by an armed man. Milwaukee City Police Chief Jeffrey Norman underscored that the officers acted to protect lives in times of danger. The chief said two knives were recovered from the scene.

Body camera footage released by police captured the tense moments leading up to the fatal shooting, where officers immediately instructed the man to drop the knife. Camera footage shows the officers on the bike talking before one of them says “he has a knife”.

Several officers then shout “Drop the knife!” As they run towards two men standing in the road. Police fired their weapons when the armed man moved towards the unarmed man. “Someone's life was in danger,” Norman said. “These officers, who were not in the area, took it upon themselves to act today to save a life.”

The incident comes as Trump's failed primary challengers are set to take the stage at the Republican Party convention on Tuesday, in an act of support for the party's leading figure and newly appointed US presidential candidate. The united front comes a day after the former president drew high spirits as he entered the convention hall in Milwaukee as he made his first public appearance since surviving an assassination attempt over the weekend.

Thousands of officers from multiple jurisdictions are providing extra security in Milwaukee for the convention, which ends Thursday. Accordingly Associated Press, the shooting drew the ire of residents who questioned why out-of-state officials were in their neighborhood, about a mile from the convention site. The Columbus Department of Police said there was nothing to suggest the shooting was related to the convention.