Four people have been arrested in methamphetamine manufacturing investigations in north and south Mississippi, according to Mississippi Bureau of Narcotics Director Marshall Fisher.

In south Mississippi on Thursday night, MBN agents charged Steven Scott Snow, 22, and Courtney Elizabeth Smith, 19, both of 1035 Guiding Light Road in Magnolia, with manufacture of methamphetamine and possession of precursors with intent to manufacture methamphetamine.

Robert Anthony Criswell, 26, of 7307 Highway 568 in Magnolia, was also arrested at Snow and Smith's residence. Criswell was charged with manufacture of methamphetamine, possession of precursors with intent to manufacture methamphetamine and possession of methamphetamine.

While serving a search warrant at the Guiding Light Road residence, agents interrupted an active 'shake and bake' meth reaction in progress, ready for the addition of pseudoephedrine, camp fuel, sodium hydroxide, salt and lithium, Director Fisher said.

Items seized in addition to the meth precursors include a small quantity of methamphetamine along with a pump shotgun, cookware and plastic tubing.

Snow and Smith were also charged with felony child endangerment because their toddler was present at the lab site.

The Mississippi Department of Human Services took custody of the child and placed it with other family. 

All three suspects were transported to the Pike County Jail, where they were awaiting initial court appearances.

The investigation is ongoing and additional arrests are anticipated.

In a separate investigation in north Mississippi, officers charged John Barry Williams, 36, of 1038 CR 148 in New Albany, with possession of precursors with intent to manufacture methamphetamine.

A search warrant executed at Williams' residence Thursday evening turned up methamphetamine residue and the meth precursors ammonium nitrate, camp fuel, lye and salt in a duffel bag under the residence.

Williams was transported to the Union County Detention Center, where there is a hold on his release for possible violation of the terms of his probation on a Lee County manufacture of methamphetamine charge.

Bond for this latest charge has been set at $25,000.

Participating in the investigation were the Mississippi Department of Corrections, New Albany Police Department, Union County Sheriff's Department, Pontotoc Police Department and Pontotoc County Sheriff's Department.