 Also, the federal government has increased the freight rate of petrol by 10 naira per litre, a secular on the increase, which took effect June the first will be issued today by the government. The President, Nigerian Association of Road Transport Owners, Alarji Yusuf, Uthman Saithi increase was because most transporters could not afford the cost of diesel that used to be 600 naira per litre as a last month. This has accumulated in the scarcity in the FCT as its environs wear cues around retail outlets have persisted in the last few days. It has also triggered black marketing, with some traders vending it for between 3,000 to 4,500 naira per litre in plastic containers.