WASHINGTON (CBS) — U.S. Rep. Luis Gutierrez (D-Illinois) was arrested during an immigration protest at the White House on Tuesday.

Gutierrez spokesman Douglas Rivlin confirmed the congressman was arrested outside the White House Tuesday afternoon, along with about 11 other people who were sitting on the sidewalk in front of the White House as part of an immigration protest.

U.S. Park Police gave them three warnings to leave and, when they refused, they were put in plastic handcuffs and taken into custody. today during an immigration protest.

Gutierrez was part of a group calling on President Barack Obama to reform the nation’s immigration system, a promise Obama made during his campaign. Since Obama was elected, more than 1 million people have been deported, according to Gutierrez’s office.

Gutierrez was released Tuesday afternoon after paying a $100 fine.