A Johns Island man has been sentenced to 30 years in prison for his part in a large-scale drug trafficking conspiracy connected to a significant Mexican drug cartel, the U.S. attorney’s office reported.

Marcus Gibbs, 40, was sentenced Thursday in Charleston to 360 months imprisonment for the offenses of conspiracy and possession with intent to distribute more than 5 kilograms of cocaine, money laundering and being a felon in possession of a firearm, officials said today.

In addition to the 360 months imprisonment, Gibbs was sentenced to supervised release for life upon completion of his jail term.

U.S. District Judge Richard M. Gergel imposed the sentence.

Evidence presented during the week-long trial of Gibbs in late-October of 2011 established that Gibbs was responsible for the procurement and distribution of more than 500 kilograms of cocaine from Mexico, via Atlanta, beginning at least in 2006 and continuing up until the date of his arrest in 2010.

Gibbs would wire drug proceeds back to Mexico, as well as deliver bulk cash to co-conspirators in Atlanta. On August 31, 2010, law enforcement conducted a buy/bust operation of Gibbs wherein agents seized a half kilogram of cocaine and a .45 caliber handgun.