The announcement comes after police said they were not aware of any NASA event on Tuesday.
NASA co-principal Moses Wetang'ula has maintained that their Tuesday meeting which they have fashioned as a memorial service to honour their supporters killed by police in street protests will go on as planned despite the police ban.
Nairobi Police Commander Japheth Koome is on record saying the police was not aware of any other event on Tuesday apart from the President's swearing-in ceremony.
"You must notify the station commander of where the procession will start. Nobody has notified any of the station commanders about any other function on Tuesday. If anybody does not involve police and wants to break the law that person should know we will deal firmly with such cases accordingly," Koome declared.
However, Wetang'ula stated nothing will stop the coalition from holding its planned rally at Jacaranda grounds on Tuesday.
"We will neither relent nor be intimidated by the police ban. The meeting will go on as part of our push for electoral reforms," Wetang'ula affirmed.
NASA leader Raila Odinga blasted the Jubilee Administration for going ahead with the inauguration event which will cost Sh300 million saying that it was wrong for them to hold such celebrations at a time when the country is mourning the brutal murder of innocent Kenyans.
“It will be crazy for any government to arrange for any ceremony when the country is mourning.
"On Tuesday it will not be a rally but a major memorial service to pray with the families to ensure that their loved ones get a descent send off,” Odinga said.