OAKLAND PARK— The thief in the security-camera video appears cool and collected as he toils in the darkness, ripping apart a bar's air-conditioning system and walking away with valuable parts.

Investigators on Wednesday released the surveillance video taken on July 14 at the Stable bar, hoping someone can identify the man they say destroyed the pricey AC system for its parts. To see the video, go to http://www.sun-sentinel.com/news/broward/oakland-park/fl-oakland-park-copper-theft-20110803,0,6599405.story.

The man took the compressor, fan, and about 10 feet of copper tubing from behind the bar at 205 E. Oakland Park Blvd.

Investigators say the heist is one of many in recent months at closed businesses, schools and abandoned homes. The thieves are also targeting aluminum storm shutters and copper backflow valves.