Posters urging people at UT-Arlington to report those in the country illegally to immigration officials were spotted on campus Monday.

The fliers, which include the website of the white supremacist group Vanguard America, call on white Americans to turn in unauthorized immigrants to U.S. Immigration and Customs Enforcement.

"America is a white nation," the fliers read.

In addition to the one found on campus, the Vanguard America website contains anti-black and anti-Muslim posters. It is not clear whether members of the group were responsible for hanging the posters.

It's unclear when the posters first popped up, how many appeared on campus, though a university spokesman said there was more than one.

The university requires posters be approved by the Office of Student Activities and Organizations. The Vanguard America posters had not been OK'd and were removed Monday, the university said.

"We are proud that UTA is a place of learning and as an institution of higher education, we expect high standards of civil discourse," the university said in a prepared statement.

The schools's flier policy prohibits obscene or libelous material; unauthorized commercial solicitation; material that advocates the deliberate violation of any federal, state or local law; or incites or produces imminent lawless action.

Voto Latino tweeted an image of one of the posters and urged people to demand school President Vistasp Karbhari to declare UT-Arlington a sanctuary campus, an effort that gained momentum after President Donald Trump's election.

UT-Arlington students voted overwhelmingly in favor of a sanctuary campus referendum last week. The referendum would create a written policy restricting the access of student information to government officials, such as ICE, without a warrant or subpoena, the Shorthorn reported.

The referendum had 1,355 votes in favor and 460 against, but the university president must decide whether the school will be a sanctuary campus.

Karbhari said in February that UT-Arlington cannot be a sanctuary campus for undocumented students because as a public institution funded with state and federal dollars, the university must follow all laws or risk losing the funding, the Shorthorn reported.

On Wednesday, the Texas House will debate Senate Bill 4, which would ban universities, cities and counties from creating policies that prevent local law enforcement agencies from asking about a person's immigration status or enforcing immigration law.

In February, watchdog website Canary Mission published a report claiming two dozen current or former UT-Arlington students had made anti-Jewish remarks or statements in support of Hitler and/or the holocaust. The university then said it condemned statements of hate "while acknowledging the principles of free speech and open expression."

Monday's posters are the latest in a string of racist or discriminatory fliers that have popped up on college campuses across Texas.

The SMU president condemned a flier found on campus in November that was titled "Why white women shouldn't date black men."At Texas State University the same month, police were investigating fliers that called "tar and feather vigilante squads" to form and "arrest and torture" university leaders who seek diversity on campus.