Vienna - The price for crude oil produced by the Organization of the Petroleum Exporting Countries (OPEC) slid below the 90-dollar mark on Wednesday, OPEC said on Thursday.

One barrel (159 litres) of OPEC crude stood at 89.99 dollars Thursday, down 0.33 dollars from 90.32 dollars on the previous day.

Since last Friday, the cartel's basket price of 13 brands produced by members has dropped by 7.69 dollars. (dpa)