Odinga claims he, not President Uhuru Kenyatta, is the real victor of a presidential election held in August but later nullified by the Supreme Court on procedural grounds.
They are expected to be accompanied by a host of supporters who also attended the rally that saw NASA leader Raila Odinga sworn-in as People's President in a symbolic event.
Isaac Okero, president of the Law Society of Kenya, told reporters: "Once again the state is wilfully violating Mr. Miguna's rights by moving him without any notice to his lawyers or his family and, in order to frustrate their access to him, to a court stationed outside Nairobi".
Justice Kimaru had earlier on Monday summoned Boinnet and DCI to appear in court at 2pm to show cause why they should not be cited for contempt for failing to comply with orders issued.
It was unclear why the government switched back on the transmitters.
The activists were trying to march to government offices in central Nairobi when police fired the gas, a Reuters witness said.
Madowo noted the transmitters for Citizen TV were in a different place, which might explain the delay. Odinga insists he, not Kenyatta, was the true victor of a disputed presidential election last August. The opposition claims the original vote was rigged and that electoral reforms were not made after the Supreme Court nullified the election and ordered a fresh one.
Since the symbolic inauguration, Odinga and his supporters have repeatedly promised to outline their next step, only to postpone the unveiling of their plan.
"On the 30th day of January 2018, at Uhuru Park in Nairobi County, jointly with others not before court were presented and consented to administering of an oath to Raila Amollo Odinga purporting to bind the said Raila Amollo Odinga to commit a capital offence of treason", the charge sheet read. So far police have not arrested Odinga. "The government was and is aware of the role of some elements in the media fraternity who participated in furtherance of this illegal act", Interior Minister Fred Matiang'i said at the time.
Telugu Desam MPs to up the ante in Parliament
Hari Babu, who happens to be the state president and Bandaru Dattatrreya, who is now representing Telangana. Miffed with its alliance partner over the Budget, TDP MP TG Venkatesh even declared "war" on BJP on Friday.