Several anti-narcotics agencies found 16 tons of marijuana at the Rolling Hills Nursery in Long Beach Thursday afternoon.
Four suspects at the location were arrested and taken to the Lakewood Station for booking, the Los Angeles Sheriffs Department said in statement Friday.
The marijuana was found in two storage containers at the nursery on Orange Street. The value of the plants range from $150 million to $300 million, depending on the quality of the marijuana.
The sheriff's narcotics bureau is leading the investigation, the department said. Further details were not available because of the ongoing investigation.