National Drug Law Enforcement Agency (NDLEA) says a total of 15 drug kingpins, out of the 3,412 drug offenders successfully prosecuted and convicted in 2023, collectively bagged 168 years imprisonment.NDLEA Chairman, Retired Brig.-Gen. Buba Marwa, stated this on Wednesday in Abuja while addressing commanders and officers of the agency during an award and commendation ceremony.The