Temple Israel in Minneapolis was hit by taggers Tuesday night that left purple spray-painted letters on the historic stone structure, the Star Tribune reports.
The vandalism happened just a few days into the celebration of Passover, however Jewish religious leaders say the markings don't appear to be anti-Semitic.
Security footage shows a man vandalizing the temple sometime before midnight. Minneapolis police are investigating.
Temple Israel is the largest synagogue in Minnesota with 6,000 attendees.