Four people were arrested near Greenwood Thursday night after police discovered their alleged "illegal narcotics laboratory." On March 6, Johnson County Sheriff's Office deputies responded to the 900 block of Stone Road to execute a search warrant, near Smith Valley Road. During their search, officials found illegal narcotics inside of a laboratory that was actively set up to make hallucinogenic narcotics — more specifically, LSD. The house is also listed as the address for a non-profit business. Due to the demand of the discovery, Indiana State Police and the Drug Enforcement Administration were called in to help. Several officials worked together to clean up the laboratory. READ MORE: https://www.wthr.com/article/news/local/4-arrested-when-police-discover-illegal-narcotics-laboratory-johnson-county-indiana-drug/531-6c8b8967-2a91-4868-a2b1-61f03ec3c80a