Dr Junaid Mohammed, a member of the House of Representatives in the Second Republic is dead.
A family member confirmed his death to P.M.NEWS correspondent in Kano today.
He said the outspoken politician, now in his 70s, died in his home after a short illness.
His junior brother, Dr Ahmed Salik, was also quoted by several news outlets on Thursday night, confirming the death.
Unconfirmed sources, however, said he died at an isolation centre. His burial is expected to be announced by the family soon.
Junaid, a serial critic of past governments and trenchant critic of the Buhari government, was a Soviet trained medical doctor.
He was elected into the House of Representatives in 1979.