Some 200 West African soldiers, mainly from Nigeria and Ivory Coast, are in Benin to support the government following Sunday's failed coup, Benin's foreign minister says.

The attempt was foiled after Nigeria deployed fighter jets to drive the mutineers out of a military base and state TV headquarters, where they had declared a takeover.

This is the first time that officials have said how many foreign soldiers were deployed to the country, although it is not clear if some have been withdrawn since Sunday.

Benin's Foreign Affairs Minister Olushegun Adjadi Bakari on Thursday said some of the regional troops sent to help had remained in the country "as part of the sweep and clean-up operation".

A manhunt for those involved in the plot is under way, with the leader of the failed coup said to be taking refuge in neighbouring Togo.