A Covington woman was arrested Tuesday on narcotics and weapons-related charges after her husband was arrested in Calcasieu Parish following a traffic stop and an investigation led back to the couple's apartment and a stash of drugs, cash and weapons, according to State Police.

Deputies with the Calcasieu Parish Sheriff's Office had stopped 36-year-old Covington resident Dujuan Jerel Johnson as he was driving on Interstate 10 Monday, and they discovered he had $72,600. He was arrested and booked into the Calcasieu Parish jail for money laundering.

Deputies and Troopers with the Combined Anti-Drug Team Narcotics Task Force found evidence linking the suspect to the Covington area, and evidence from the traffic stop was shared with Troopers from the Region I Narcotics Field Office.

Troopers and deputies with the St. Tammany Parish Sheriff’s Office identified an apartment in the River Chase area of Covington, and on Tuesday, agents went there to speak with Mai Ly Thuy Johnson, 35, the suspect's wife, according to a news release from Troop L.

She gave written consent to a search of the apartment, and agents found a Century Arms AK-47 Pistol, $9,614.00 in currency, approximately five grams of marijuana, drug paraphernalia, a 20-ton hydraulic press that was machined to press and brand kilograms of narcotics, a vacuum sealer, table top currency counter and several other items used for to manufacture and distribute illegal narcotics.

Troopers also found a locked safe, and after obtaining a search warrant for the safe discovered  a stolen Ruger LCP .380 handgun and 3.3 kilograms of heroin with an estimated street value of $825,000.

Mai Ly Thuy Johnson was booked into the jail with intent to distribute a schedule I  controlled dangerous substance (heroin), possession of schedule I controlled dangerous substance (marijuana), transactions involving proceeds from drug offenses, Possession of a firearm in the presence of a controlled dangerous substance, possession of a stolen firearm and possession of drug paraphernalia.

The criminal investigation is on going and additional arrests are anticipated.

Follow Sara Pagones on Twitter, @spagonesadvocat.