Philadelphia District Attorney Larry Krasner said that he believed behavior at the polls was “a little more aggressive” but that there were no arrests in the city.

Matt Stiegler, senior counsel for the attorney general's office, said the office is “monitoring” reports from voters that poll workers recorded. Stiegler said prosecutors gathered those from media reports, but he wouldn't say whether poll workers reported instances of recordings.

“Hidden camera footage of poll workers and voters and poll workers, that’s not normal,” Stiegler said. “If that happens, it will be a significant escalation of what has happened in the past.”

Krasner said his office has seen no evidence of voter fraud. However, any irregularities would probably not be reported until later in the evening, he noted.

“We have no reports of anything that looks like voter fraud…We don't expect there to be anything like that, but if there is, we want to know about it. “We don’t want to hear a bunch of crazy fiction later about how things happen,” he said.

“If we hear about this at nine o’clock after the polls close, you should rightly be suspicious of what you hear.”

Prosecutor Krasner reiterated his warning yesterday that there will be consequences for those who break the law.

“There are handcuffs, there are cells, there are courtrooms and there are Philadelphia jurors who definitely want to know why it is a person who tried to erase their voices, block their voices, bully their voices or deprive them of their votes,” he said. “We vote in Philly. We choose our conscience. We vote for whoever is our favorite candidate.”

-Chris Boccia from ABC News