UPDATE 10:44 a.m. Eastern:
Trump campaign manager Kellyanne Conway called Crites a "Democratic operative" and dismissed Donald Trump Jr.'s tweet calling the incident an "assassination attempt." Crites has denied any affiliation with the Democratic Party.
UPDATE 8:36 a.m. Eastern:
In a since-deleted Facebook post, Crites said that he has donated to the Clinton campaign despite being a registered Republican. He had already cast his vote for her; early voting in Nevada ended Friday.
He also denied having any connection to the Clinton campaign "apart from me supporting her HOPE over Trump's HATE."
He told The Guardian he tried to say "There is no gun" as he was being beaten by Trump supporters.
WATCH | Our partner at KRNV spoke to another witness who said Crites was "fighting the whole way through."
UPDATE 7:50 a.m Eastern:
Crites told the Reno Gazette-Journal he was beaten and choked for holding a "Republicans Against Trump" sign.
Michael Newton, another witness, said he was trying to get the Secret Service's attention, saying Crites was the aggressor.
"I saw his hand contact someone's face. Maybe two people," he said. Crites denied hitting anyone, but Newton said he pinned Crites to the ground with his knee to immobilize him.
Crites said he was confused as to how people thought he had a gun since he was holding a sign and not making any sudden moves.
"I love all the people in that rally. We're all fellow Americans...I just have a slight difference of opinion," he said.
The Gazette-Journal reported that Crites wrote on Facebook condemning the incident, saying, "Take what happened to me tonight as a classic example of dictator incitement of violence." His account has since been deleted.
WATCH | Donald Trump was rushed offstage by Secret Service agents during a rally Saturday night in Reno, Nevada.
CNN reports a man named Austyn Crites was detained. He said he was holding a "Republicans Against Trump" sign, then was tackled and assaulted by a group of people.
A Secret Service spokesperson told CNN no weapon was found after a search. Crites was released without charges being filed.
"All of a sudden...I get tackled by all these people who were just, like, kicking me and grabbing me in the crotch and just, just beating the crap out of me," Crites said.
WATCH | Trump returned to the stage minutes after being rushed off and continued his speech.
Witness Shimon Cohen told CNN a man "rushed right next to me, screaming, 'There is a guy with a gun.'"
Trump's social media director retweeted a supporter calling it an assassination attempt.
WATCH | Similarly, at a later rally in Denver, Rev. Andre Mahanna, who introduced Trump, called the incident an "attempt of murder."
However, no weapon was found at the scene, according to a Secret Service statement.
Reno police told ABC News were initially told there was a "medical incident" before Trump was rushed off stage.
Here's how the chaotic scene looked.
Trump praised the "fast and professional response" of the Secret Service and police.
Other witnesses said Crites had instigated the violence.
Crites' possible ties to WikiLeaks
A file leaked by WikiLeaks lists an Austyn Crites in Reno. That name is on a list of people allegedly tied to an intelligence company called Stratfor.
This led some to believe Crites was working for Hillary Clinton to instigate violence. However, he does not face any charges.
Some called Crites a "provocateur."
Others pointed to a Facebook page that appeared to belong to Crites.
Here's another look at Crites.
What you need from the polls
Here's the state of the polls per RealClearPolitics.