Anti-Semitic and racist messages and threats scrawled in black marker in a building at Cal State Northridge on Wednesday prompted campus police to boost patrols.

The graffiti was reported about 4:45 p.m. inside a men’s restroom on the third floor of Sierra Hall. The messages and symbols were written in four or five locations in the bathroom, said Cal State Northridge Police Capt. Alfredo Fernandez.

People on campus posted photos of the messages on Twitter late Wednesday.

“Mass shooting in Sierra Hall 12/12/18,” one read, above a swastika. Another included the N-word.

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CSUN is aware of the hateful and offensive graffiti in Sierra Hall. CSUN Police are investigating this use of hateful language and symbols and threat against our community. We are working to remove this graffiti immediately. CSUN condemns this in the strongest possible terms.

— Cal State Northridge (@csunorthridge) December 6, 2018