Ex-Kaduna State Governor, Nasir Ahmad El-Rufai, has accused the Office of the National Security Adviser (ONSA) of procuring a highly toxic chemical compound, thallium sulphate, allegedly capable of being used for assassinations.
In a statement posted on his verified X (formerly Twitter) account on Sunday, El-Rufai claimed that information available to opposition political leaders suggested that the office of the National Security Adviser, headed by Nuhu Ribadu, had imported approximately 10 kilograms of thallium sulphate from a supplier in Poland.
The former governor said he had formally written to the ONSA seeking urgent clarification over the alleged transaction, describing the matter as one of grave public concern. 
