DENVER -- Authorities are holding a man on suspicion of criminal mischief after someone threw a rock through a window at the Donald Trump campaign office in Denver, narrowly missing a 10-year-old child.

According to police, Michael Ferrara, 33, is currently in custody in connection with the crime, CBS Denver reports.

Michael Ferrara has been arrested by Denver police in connection to throwing a rock through the Trump’s campaign office. Denver Police Department via CBS Denver

Police rushed to 18th and Clarkson just before 9 p.m. Friday where they found a rock thrown through the Trump campaign field office. The campaign office serves as the headquarters for Trump’s Denver team.

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A security officer with Trump’s campaign detained Ferrara until police arrived.

About two dozens Trump volunteers and staff were inside making calls at the time. No one was hurt.

Denver campaign co-chair Steve Barlock said the rock left a melon-sized hole in the window and the man fled.

“He ran and one of our volunteers was across the street talking to an off-duty police officer. An armed security guard and the volunteer ran him down and captured him,” Barlock said.

On-duty police responded from several blocks away and took the man into custody. No injuries were reported.

Earlier in the day, someone painted graffiti on the same building. No arrests have been made in that case.

Police are still searching for the person who painted graffiti at the Denver office of the Trump campaign CBS Denver

Trump held a campaign rally scheduled in Denver on Saturday night.

The graffiti and rock-throwing follows the firebombing of a Republican office in North Carolina last month.