The regional bloc had earlier given Niger junta seven days to reinstate President Mohamed Bazoum or risk sanctions, including possible military action.
But the Niger military disregarded the warnings of ECOWAS and vowed to resist any foreign intervention on its soil.
It also severed ties with Nigeria, Togo, France and the US, and shut down Nigerien airspace indefinitely.
At the end of the ultimatum, the bloc scheduled a meeting for Thursday to review the situation in the West African nation.
Addressing State House correspondents yesterday, Presidential spokesman, Ajuri Ngelale, said more sanctions had been imposed on the individuals and entities relating with the military junta in the Niger Republic.
Ngelale, however, did not go into details, but said it was carried out through the Central Bank of Nigeria
