A man was reportedly arrested for “aggressive” behavior at a rally for Democratic presidential hopeful Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (Mass.) on Saturday.

A police report said that Randal James Thom, 58, was verbally taunting Warren and became “very vocal” and “aggressive” at the Storm Lake, Iowa event, according to the Des Moines Register.

Thom, who was carrying a sign boasting President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE’s 2020 campaign slogan, “Keep America Great,” also "attempted to assault others in the crowd,” according to the report.

Outside @ewarren's Storm Lake event, a man handcuffed after verbally taunting Sen. Warren. He displayed "Keep America Great" sign then got into a scuffle with others, all according to our @smahaskey who shot these photos. pic.twitter.com/kgY3ItzTRE — Natasha Korecki (@natashakorecki) January 5, 2019

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Other media at the event described Thom as a Trump supporter, the Register reported.

Thom was charged with disorderly conduct and booked into county jail on a $300 bond, according to the newspaper.

The Iowa event was part of Warren’s first trip since announcing on New Year’s Eve that she was forming an exploratory committee for a 2020 White House bid.