Senator Rose Oko, who represented Cross River North Senatorial District, has died in a UK medical facility.
The 63-year-old died on Monday at the hospital where she went for treatment.
She is said to have been out of the country for about four weeks with complications arising from high blood pressure.
Her death came as a shock as it was believed she was “getting better”, Premium Times quoted an aide on Tuesday.
The deceased was a member of the Peoples Democratic Party and a two-term senator.
She was also the chairman, Senate Committee on Trade and Investment.
Oko was elected as the first female representative from Yala/Ogoja Federal Constituency in June 2011 in the House of Representatives.
She became the deputy chairman, House Committee on Education.
