Transcript for Police Investigate Chicago Jewel Heist
Nearly every square inch of Steve quick jeweler is covered by an elaborate security system complete with cameras and motion detectors. Everything except for a two foot wide by three foot long area in the back corner. He seemed to know where our motion detectors -- so he stayed. Against the wall there's of the motion detectors would not pick up his movements -- -- hero who have been properly he was where you are it -- Police immediately. The thief got into the store by breaking into the sushi restaurant next door in cutting a hole through the wall it's now boarded up. Then despite working in a confined space somehow used to -- to cut through the four inch stick back -- of the safe made of steel and hardened concrete. Then reached up into the hole and grabbed whatever jewelry was within reach are still doing inventory but it may have been worth up to a half a million dollars. Steve quick story's been robbed a number of times over the last 25 years and armed robbery in 1996 injured an employee and -- that -- about 750000. Dollars. But this was different. Someone knew exactly what they were doing and what they were looking for and how to do it. So now was an amateur it was it was a highly professional operation that -- this. Jewelry the blocks to customers some family heirloom wedding rings engagement rings and other things like that was actually locked up in another safe. What the thief got included mostly things that launch the store and the owner says most of that is replaceable. In Lincoln Park John Garcia ABC 7 NEWS.
This transcript has been automatically generated and may not be 100% accurate.