A security source said Obuah is being held in connection with an ongoing investigation into illegal oil bunkering.
The source said the ex- CSO who worked with ex-president Jonathan during his six years in office had been under instruction to report daily to the DSS headquarters in Abuja daily, but was detained last Thursday evening.
It was further gathered that Obuah had been on hunger strike since his detention.
It was alleged that relatives and lawyers had been denied access to him.
In a statement signed by it Executive Director, Society for Global Justice confirmed that Obuah was detained at the DSS headquarters in Abuja and demanded his immediate release.
The group said, “Obuah has been detained since last Thursday at the headquarters of the State Security Services in Abuja without charge.
“He was also not told the reason for which he is being detained,” the statement added, calling on Nigerians to take note of the tyrannical, autocratic and dictatorial tendencies of the Buhari administration. -The Sun