The San Luis Obispo County Sheriff’s Office discovered a methamphetamine lab in San Luis Obispo Saturday.
Deputies found the lab in a storage unit in the 400 block of Prado Road.
After a three week investigation Deputies believe the lab was being used to extract ephedrine from cold pills, which would then be used to make methamphetamine.
Narcotics detectives also found a small amount of meth.
Authorities arrested 43-year-old Robert Alan Sullivan-Seher for possession of a controlled substance.
30 year-old-Tara Christine Wilson of Oceano was cited for misdemeanor possession of drug paraphernalia.