HOUSTON --Authorities seized more than 200 marijuana plants during a search of two Woodlands residences. The Montgomery County Sheriff's Office Special Investigations Unit says it served two narcotics search warrants at a residences located on North Wavy Oak Circle and Red Berry Court in The Woodlands after receiving a tip that marijuana was being grown indoors at the residences. The evidence recovered at both locations included over 200 marijuana plants, indoor grow paraphernalia that included lights, timers, air purifiers, compressed gas cylinders containing carbon dioxide, chemicals and other items used to grow marijuana indoors. Also seized was a backpack containing several ounces of packaged marijuana for sale with suspected customer's names written on them and a scoped assault rifle. Each plant is capable of producing an average of one pound of marijuana commonly referred to as 'Skunk' or 'Dro.' This type of marijuana has a stronger THC content and sells for around $5,500 per pound. Both residences were used strictly as grow operations and were not lived in. Authorities say the investigation is continuing.