A Little Elm man was sentenced to 25 years in federal prison after pleading guilty to what federal prosecutors describe as a conspiracy involving drones used to drop methamphetamine and cellphones at a Texas prison.

Texas prison drone drug smuggling operation What we know: 33-year-old Tyler Joseph Gatten, also known as "Chains", pleaded guilty to conspiracy to possess with intent to manufacture and distribute methamphetamine.

According to the U.S. Attorney's office for the Eastern District of Texas, U.S. District Judge Sean D. Jordan sentenced him to 300 months in federal prison on Oct. 28. Prosecutors said Gatten led a drug-trafficking conspiracy that used drones to smuggle kilogram quantities of meth and cellphones into Texas Department of Criminal Justice facilities.