SAN RAMON (KRON) — The San Ramon Valley Unified School District is dealing with yet another incident of racist graffiti found at one of its high schools, according to school officials.

This time the graffiti was found at California High School. This is the fourth incident of racist graffiti at a high school in SRVUSD since the beginning of October.

The first case at California High School was reported on the week of October 17. Racist graffiti was found in a bathroom of the school.

Another similar incident happened on Wednesday at Monte Vista High School in Danville. The graffiti was also found in a bathroom.

On Thursday, two more cases were reported at California High School in bathrooms.

The school district is working with law enforcement agencies to investigate and will take the appropriate disciplinary actions, school officials said.

Schools officials are also encouraging students to come forward with any information they might have.