Oil prices have fallen below 60 dollars on Monday - the lowest level since the end of May. According to some experts prices might fall even further to 50 dollars per barrel, Arabian Business reports. These concerns come amid speculations that the world economy might face another dip and the demand for fuel will be even lower. Although during the course of the last several months, oil prices recovered slightly from a low of 30 dollars per barrel, last week the oil market fell by 11% which was the biggest decline in a week since January.