Georgia lawmaker Park Cannon has vowed to continue knocking on the “doors of injustice” after it was confirmed she will not be prosecuted for knocking on the governor’s door.

Cannon, an out, Black state representative, was arrested and forcibly removed from Georgia’s state capitol building  for knocking on governor Brian Kemp’s door as he signed a voting bill that has been condemned as racist. She was subsequently charged with obstruction of law enforcement and disrupting the general assembly.

Two weeks after her arrest, Fani Willis, district attorney of Fulton County, Georgia, said the office will not file charges against Cannon, telling the Atlanta Journal-Constitution that she considers the case closed after reviewing the evidence surrounding her arrest on 25 March.

“While some of Rep. Cannon’s colleagues and the police officers involved may have found her behaviour annoying, such sentiment does not justify a presentment to a grand jury of the allegations in the arrest warrants or any other felony charges,” Willis said.

Park Cannon tweeted following the news she would not be prosecuted: “Doors of injustice are everywhere, and we cannot stop knocking.”

Gerald Griggs, an Atlanta attorney who is representing Cannon, welcomed the news.

He said the “facts and evidence showed to the world” that Cannon “committed no crime and should not have been arrested”.

He added: “We thank the district attorney for her thorough review of the evidence and are weighing our next legal actions.”