Acting on a tip, the San Luis Obispo County Sheriffs Office served a search warrant at the County Jail on May 16 and found a controlled substance hidden behind postage stamps on several pieces of mail addressed to an inmate.
The mail was addressed to Thomas Richard Rodriguez, Jr., 26, of Grover Beach, who was in custody for various drug offenses, officials said.
An investigator discovered strips of Suboxone, an opioid antagonist used to treat symptoms of opioid addiction but which also has the potential of abuse, hidden under the stamps.
The letters allegedly were sent by Linda Vanessa Johns, 25, of Oceano, at Rodriguezs request, authorities said.
Johns was arrested and booked into jail on suspicion of bringing or sending a controlled substance into a jail and criminal conspiracy, both felonies. She remained in custody on $55,000 bail Thursday, jail logs showed. Rodriguez faced the same charges and $5,000 was added to his existing bail for a total of $30,000. He remained in custody Thursday.