According to reports Bello died on Wednesday, February 15 morning aged 51.
Premium Times quoted Abubakar Adamu, an aide to the late lawmaker, as saying that he had been suffering from an unnamed illness for many months before he finally gave up the ghost.
Adamu said Bello's illness turned worse weeks ago and he was rushed to the Federal Medical Centre in Kaduna but eventually died Wednesday morning.
“He died this morning few minutes after 11:00 and we're now taking his body to Katsina,” Adamu said.
While announcing the death, Speaker of the House, Yakubu Dogara said: “With great sadness, I receive the news of the death of Hon. Bello Sani, who represented Mashi/Dvisi federal constituency of Katsina state.
“Our colleague was compassionate, principled, and interacted freely with all members. Our heartfelt condolences go to his immediate family, government and people of Katsina state.
“Our heartfelt condolences goe to his immediate family, government and people of Katsina State and his colleagues and the government and people of Nigeria.
“We pray God to give all of us the fortitude to bear the irreparable loss,” the Speaker said in the statement issued by his special adviser on media and public affairs Turaki Hassan.
Late Sani is the second lawmaker in the House of Representatives to die in office in a year.His death comes months after another lawmaker, Adewale Oluwatayo, representing Ifako-Ijaiye constituency in Lagos state died in Abuja.