Published: May 29, 2014 5:36 PM EDT

LEE COUNTY, Fla.- A two-month narcotics investigation culminated in the arrest of a father and son on multiple drug and weapons charges.

The Lee County Sheriff's Office launched the investigation into a suspected narcotics trafficker identified as Robert E. Barnes Jr.

The initial investigation revealed Barnes was allegedly a supplier to other identified narcotics dealers in Lee County. The investigation focused on Barnes' residence identified as 3620 Marion Street.

Robert Barnes Jr., 37, is charged with sale and possession of opiate/derivatives within 1,000 feet of Terry Park; sale and possession of cocaine within 1,000 feet of Terry Park; trafficking cocaine, possession of cocaine, possession of a synthetic narcotic, possession of marijuana under 20 grams, possession of narcotic paraphernalia, and possession of a firearm/ammo by a convicted felon. Additionally, Barnes Jr. was charged with an active child support warrant.

Detectives also arrested Robert Barnes Sr., 67, and charged him with possession of a firearm/ammo by a convicted felon.

Following hours of surveillance and controlled drug buys from Barnes; a search warrant was obtained and served today at the residence.

The following was seized:

-96.0 grams of powder cocaine

-8.6 grams of synthetic MDMA “molly”

-2.6 grams of crack cocaine

-2.0 grams of marijuana

-total of $3,015.00 US Currency

-a Hi-Point .40 semi-auto handgun with 10 live rounds

-a .25 cal semi-auto handgun with numerous live rounds

-12 gauge shotgun ammunition

-various paraphernalia consistent with the producing of crack cocaine by cooking

The Department of Children and Family Services was also notified due to the presence of a 15-year-old at the residence.