Nairobi police commander boss Adamson Bungei has declared Azimio La Umoja One Kenya Alliance Monday protest illegal.
Addressing the press on Sunday, Bungei said the protest will not be allowed as it does not meet the threshold.
Bungei said they received requests from two groups intending to hold protests on the same day and decided to grant none the permit to protest.
He said both Azimio la Umoja and Nairobi business community had written to them about their intention to hold a protest on Monday.
"We are in receipt of two requests that came late yesterday and today in the m morning. One was from Azimio la Umoja One Kenya and another from the Nairobi business community. The two groups intended to have peaceful demos. But for public safety none has been granted," he said.
Bungei said the two groups did not meet the threshold to be allowed to carry on with protest and warned of dire consequences for those who will break the law.
"Any person who will breach the peace or break the law during the procession shall be dealt with according to the law," he said.
"The public order act of 2012 is very clear, if a protest is not within the framework of that order then it is illegal."
He assured Kenyans that their security and that of their properties is well guaranteed.
"We promise Kenyans that we are ready to secure their lives and properties tomorrow."
Bungei at the same time said the State House of Kenya remains out of bounds.
He said the law is very clear that the State House is a restricted area and nobody will be allowed whether peaceful or not to access it.
"I want to underline some areas such as State House where we have heard people planning to invade or visit is covered by the laws of Kenya that it is a restricted area for unauthorised persons," he said.