Chairman of the Economic and Financial Crimes Commission, Abdulrasheed Bawa, slumped at a programme at the Presidential Villa, Abuja, on Thursday.
The incident happened when Bawa was giving a goodwill message at the National Identity Day celebration.
The EFCC boss suddenly stopped talking, staggered, and later laid down.
The Minister of Communications and Digital Economy, Professor Isa Pantami, and other dignitaries immediately held him for some time.
He was later taken out of the hall.