Two masked robbers stole diamonds worth more than tens of thousands of dollars Monday morning in Ramat Gan, where the diamond exchange center is located. No one was seriously injured.

One of the thieves was armed with a revolver and hid behind a door. He confronted the victim as he entered and the second thief tied him up. Police are investigating how the thieves managed to pass through the heavily guarded building, which also is equipped with video cameras.