RESEDA ( — A San Fernando Valley high school has been vandalized with hate messages, including threats to President Barack Obama, authorities announced Monday.

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The graffiti was discovered around 7 a.m. when staff at Leichman High School Special Education Center, located at 19034 Gault St. in Reseda, returned to campus.

The damage included pictures of bombs, anti-LAPD rhetoric, swastikas and a “KILL OBAMA?” statement scrawled across the side of a main building.

“This is an unfortunate incident that affects us all,” Principal Giovanni Trivino told CBS2.

The LAUSD special education center serves students ages 14 to 22 with moderate to severe disabilities.

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School is currently out for the summer and no students were on campus when the crime occurred, Trivino said.

(credit: Leichman High School, Special Education Center/CBS)

(credit: Leichman High School, Special Education Center/CBS)

“Our maintenance and operations team removed the graffiti. Counseling is offered to staff,” he added.

Damage to the school property was estimated at $2,500.

School officials say the campus was also vandalized in May.

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Both incidents were being investigated by Los Angeles School Police and the Los Angeles Police Department.