Virginia Tech police are investigating a rash of vandalism containing racial slurs in university buildings.

According to a search warrant affidavit filed Monday in Montgomery County Circuit Court, the vandalism began appearing Aug. 17.

Inside McBryde Hall, Johnston Student Center, Major Williams Hall and Engel Hall, racial slurs and swastikas were found as well as the phrase "A Cho reborn, it will be avenged," an apparent reference to student Seung-Hui Cho, who killed 32 students and faculty members before killing himself on April 16, 2007.

Virginia Tech Police Chief Wendell Flinchum said the vandalism was found on bathroom walls except in one case. In Randolph Hall, threats to blow up the building were found written on a desk, according to the affidavit.

The vandalism began after an upset student left Cook Counseling Center on Aug. 12, according to the affidavit. A slur directed at center Director Chris Flynn was found in a bathroom that afternoon.

It was determined that the same student has classes in all the vandalized buildings except Engel Hall, the affidavit said.

The student has not been charged with a crime. Police obtained the warrant to search his apartment for handwriting samples; symbols, such as swastikas; and any writings related to violence toward Cook employees.

Police took paper and two notebooks during the search Friday, according to a search warrant return.

"We take all vandalism seriously" because of its impact on the community and the damage to the university's property, Flinchum said.

He said the incidents remain under investigation.