Rewrite the following text using passive instead of active
Someone broke into a local jewellery shop yesterday. The owner had just locked up the shop when a robber with a gun threatened him. The robber told him to unlock the shop and give him all the diamonds in the safe. Then the robber tied him up. The police have organized a search for the robber. They hope they will find him in a few days. Doctors are treating the owner of the shop for shock.