Nigeria, Sept. 30 -- The ongoing strike by the Petroleum and Natural Gas Senior Staff Association of Nigeria (PENGASSAN) has led to a resurgence of black market petrol sellers in Abuja, Nigeria's capital city.

PREMIUM TIMES correspondents who visited some petrol stations located along the Central Business District (CBD) and Wuse axis of Abuja on Tuesday afternoon, observed that some of the major retail outlets are under lock and keys.

For instance, it was observed that the NNPC retail outlets and some independent stations along the routes were not selling petroleum products.

At the front of these locked filling stations, some hawkers of petrol products in jerry cans were spotted. At the Conoil filling station opposite the NNPC Towers, ...