WATCH: Heckler chucks tomatoes at Trump during Iowa speech
Donald Trump speaks to Fox News (screen grab)

Police in Iowa have arrested a man accused of throwing tomatoes at GOP front runner Donald Trump at a Tuesday night rally, the Des Moines Register reports.

Andrew Joseph Alemao, 28, was arrested by University of Iowa police after being accused of throwing two tomatoes at the candidate. He is currently being held at Johnson County Jail on misdemeanor charges of disorderly conduct.

Alemao was wearing a T-shirt with the words, "Heil Trumpler" written across the front. He was arrested both by police and the Secret Service and could face 30 days in jail and a fine if convicted.

Trump was speaking at the University of Iowa Field House on Tuesday night to a packed audience, which included rowdy protesters, the Register reports.

The real estate mogul and reality TV star-turned-politician has abruptly pulled out of a Fox News-hosted GOP debate on Thursday night ahead of the caucuses, citing a beef with moderator and Fox News host Megyn Kelly.

“Let’s see how much money Fox makes without me in the debate,” Trump told a news conference.

Watch the incident, as posted by RT, here: