OMAHA, Neb. (AP) — Authorities say Douglas County Sheriff’s deputies have seized more than 18 pounds of fentanyl and nearly three pounds of heroin near Omaha.

Officials say the seizure happened Friday after making contact with a person that morning. Officials say a 44-year-old Los Angeles man was arrested on suspicion of possession with intent to deliver, criminal conspiracy and failure to have a drug tax stamp.

Officials declined to release details on the specific location and nature of the contact and arrest, citing “the sensitive nature of the on-going investigation.”