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.
Junaid, a trenchant critic of the Buhari government, was a Soviet trained medical doctor.
He was elected into the House of Representatives in 1979.
More to follow