A Colorado man on Thursday was sentenced to prison for assaulting an officer and disrupting Congress during the Jan. 6 riot at the U.S. Capitol.

The United States Attorney’s Office said 51-year-old Patrick Montgomery of Littleton was sentenced to 37 months in prison and 36 months of supervised release after pleading guilty to assaulting law enforcement while disrupting a joint session of U.S. Congress.

The Federal Bureau of Investigation said Montgomery was identified by three tipsters who saw him in videos and social media posts from inside the Senate chambers.

According to the criminal complaint filed in U.S. District Court in Washington D.C., Montgomery posted a series of updates on his social media accounts that showed his trip to Washington D.C., scenes outside the Capitol, and images inside the Senate chambers.

During Montgomery’s trip to Washington D.C., court documents said he met with co-defendants Brady Knowlton and Gary Wilson at the Yours Truly hotel. The three men then walked to the “Stop the Steal” rally near the Washington Monument and the Ellipse.

After the rally, the three men went to the West Front of the U.S. Capitol building and crossed into a restricted perimeter, court documents said.

Just after 2 p.m., Montgomery grabbed an officer’s baton and tried to wrestle it away from him. During the altercation, Montgomery kicked the police officer in the chest, documents said.

After the scuffle, the three men entered the Capitol building through doors with an “emergency exit only” sign while an alarm sounded and people were screaming.

“We stormed the Senate,” Montgomery posted on his Facebook page. “Opened those Chamber door for Transparency!”

Court documents show Montgomery and his co-defendants entered the Senate gallery at about 2:43 p.m. and confronted a U.S. Capitol police officer before leaving the building about 10 minutes later.

One of the tipsters reported Montgomery to the D.C. police and FBI on Jan. 7 and told Montgomery he’d done so in an email.

“I’m not a scared cat or running from anything,” Montgomery replied. “I’m so deeply covered by the best Federal Defense lawyers in the country in case you chicken (expletive) cry boys don’t want it takes to defend our freedom from these corrupt politicians.”

Montgomery continued: “I didn’t storm the castle violently. My group was let in peacefully by the police we were talking to with respect. We came a[n]d left peacefully before the anarchist and Antifa showed up breaking S*** and being hoodlums.”

The FBI arrested Montgomery in Colorado on Jan. 17, 2021.

Montgomery is one of 1,532 people who have been charged in the Jan. 6 riot, and one of 571 people who was charged with assaulting or impeding law enforcement, which is a felony, authorities said.