The second charge borders on transportation of a firearm interstate to commit a felony.
Shortly after the incident, Mr Trump said he is well and safe, vowing never to surrender.
In a display reminiscent of his wrestling heydays, Hulk Hogan hailed Mr Trump as his hero, theatrically ripping off his shirt as the crowd cheered.
The development marked another substantial victory for the politician, who is accepting the nomination of the Republican Party for president for the third time this week.
“I don’t condone violence, but please get you some shooting lessons so you don’t miss next time ooops, that wasn’t me talking,” Ms Marsaw wrote on Saturday.
The incident triggered panic among the rallygoers.
He said the attacks were at three different points, with the last barricade around Kwali Federal Capital Territory at about 4:20 p.m.
Former Pakistan Prime Minister Imran Khan has sustained gunshot wounds to his legs after his convoy was shot at during a protest march.
