A few days after they arrested two men for having 250 marijuana plants, Elk Grove police arrested two more men and this time found over 400 plants. Officers served a search warrant at Valley Crest Court in Sacramento. There they arrested Sacramento resident Tian Zhuo, 44. Officers found evidence of sales, a handgun and ammunition. They also arrested Shan Zhou, 40, at his Elk Grove home. Both men were transported to jail. According to police, the two growing operations were not related.