RANCHO BERNARDO (CNS) - An investigation into tagging at Rancho Bernardo High School Friday that left behind explicit sexual language and racist graffiti including swastikas continued Saturday.

Police said tagging at the school, at 13010 Paseo Lucido were spotted by students about 6:30 a.m. It was spotted around the high school football field, on the turf and in various other parts of the school campus.

Tags included male genitalia, the F word and "Go Nighthawks," suggesting the taggers may have come from rival Del Norte High School, Rancho Bernardo High School's homecoming game opponent.

Rancho Bernardo High School is offering a $500 reward for information leading to an arrest.