Thanks to a new gunshot detection system, a marijuana grow house was found in north Harris County. According to Harris County sheriff’s deputies, two people were arrested at the scene. Deputies shut down the marijuana grow house and found other narcotics, all because they say someone fired a shot. The sound of that gunshot was picked up by the ShotSpotter system, which sent an alert to deputies in the area seconds after someone pulled the trigger. The bust is the latest example of how Houston’s new ShotSpotter system works.