Police say more than $20,000 in jewelry was stolen at the Roosevelt Field Mall, and it was all caught on camera.
Police say an employee at Markens Jewelers was showing a ring and earrings to a customer around closing time on Friday night.
That is when police say the customer suddenly grabbed the jewelry and bolted out of the store.
Police say the man took off in a white Nissan Sentra.
Anyone with more information is asked to call Nassau Crime Stoppers at 1-800-244-TIPS.