A $20,000 reward is now being offered to find whoever drew seven 10-inch swastikas at an Oyster Bay park.
Police say the incident happened sometime between Wednesday and Thursday at the Theodore Roosevelt Memorial Park on a picnic pavilion.
The reward includes $5,000 from Nassau County Crime Stoppers, and $15,000 from residents and community leaders.
Police are now reviewing footage from security cameras at the park as part of the investigation.
Anyone with any information is asked to call Nassau Crime Stoppers at 1-800-244-TIPS.