University President Steven Knapp said in a statement Wednesday that the signs posted on campus supporting a “white nation” and identifying undocumented citizens as “criminals” have been removed.

The fliers that have been found on campuses around the country were not approved to be put up on campus, Knapp said in the statement.

“We will continue to do everything in our power to ensure that all members of our university community enjoy an environment conducive to civil discourse, free from expressions of hatred and acts of intimidation,” he said in the statement.

Knapp said these signs operate as a “sharp contrast” to the fliers promoting the “You Are Welcome” campaign that GW became a part of last week. The “You Are Welcome” fliers written in different languages were posted around campus when GW joined the movement.

“These signs reaffirm our values and our commitment to educating citizen leaders equipped to thrive and to serve in our increasingly diverse and global society,” Knapp said.

After President Donald Trump signed the executive order in January banning the immigrants from several Muslim-majority countries, Knapp signed a letter in February expressing his support for international students to be able to study in the U.S.