Thieves stole about $65,000 worth of merchandise overnight Thursday from a family owned jewelry store in Jersey City, authorities said.

Basel Girgis, the store manager of Marcos Jewelry Store on John F. Kennedy Boulevard, said the break-in was an "intelligent operation" that involved at least two people. He said surveillance cameras captured the incident.

Girgis said a man hid in a box and cut through the store’s security gate. He said any passersby likely assumed a homeless person was sleeping in the box.

Security video shows another man playing lookout with a getaway car. The man in the box then smashes the window. Once inside the store, the thief dressed in all white went straight to a back display case filled with diamonds before stopping by the cellphone case on his way out.

In all, he spent less than two minutes in the store.

Girgis said it appeared that the robbers had been to the store before and knew exactly what they wanted.

The owner of Marcos Jewelry Store said the repairman who will fix the business’ gate said at least 10 other jewelry stores in North Jersey have been robbed in a similar manner.

Anyone with information about the break-in is asked to contact police.