The victims were returning from Ayingba, Kogi, where they attended the wedding ceremony of another INEC worker
The Senate Committee on Gas on Wednesday said it has uncovered a fresh illegal withdrawal of $1.15 billion by NNP.
The gunmen reportedly introduced themselves as Ansarul Islam members.
Hundreds of thousands of people have been displaced over the past year by violence in Ethiopia.
Ten detained on island of Zanzibar to undergo test campaigners call torture.
The committee said the funds were credited directly to the individual banks of the companies and NEMA’s bank account.
At least five soldiers were also wounded during the attack on a military camp in Kukawa village.
Mr Ekweremadu narrated the attack which he described as an assassination attempt.