He advised the government to include all public and private secondary schools in its programme against drug abuse.
Mr Lawal urged participants to engage actively and benefit from the workshop proceedings.
Nigeria is considered a key transit hub and consolidation point for illegal trade in wildlife and forest products, especially for pangolin, ivory and rosewood.
Mr Marwa said over 11,000 pending cases and 23,725 offenders were counselled and rehabilitated.
The United Nations Office on Drug and Crimes (UNODC) says 14.4 per cent of Nigerians engage in drug abuse.
