Consequently, NOA, has advised schools, churches and mosques, among other usually crowded places, on the need to put measures in place to arrest any possible attack.
A statement released in Ado-Ekiti by the state Director of NOA, Mr. Dayo Famosaya, said the alarm had become necessary because of the need to be security conscious and watch out for strangers in their neighbourhood.
Famosaya, in the statement entitled Public information on security consciousness and awareness, said Boko Haram fighters may have infiltrated the South-western part of the country, going by the content of security agents reports.
He said: "They have threatened to deploy cluster bombs in the zone. These cluster bombs are usually housed in discarded metallic materials such as cans of beverages and soft drinks.
"The bombs may be concealed in bags and for it to have more grievous effect, they have planned to deploy these bombs in crowded places such as schools, markets, stadia, churches and mosques."
It warned the public to watch out for people wearing flowing apparel, as it was the type of cloth they wear to hide their weapons