Russian ruble has fallen against U.S. dollar to levels of early April against the backdrop of decline in oil prices, as well as risk-avoiding trends in financing after the release of data showing decline in China's manufacturing industry, Reuters Russian service reported.

Since the start of trading on the Moscow Stock Exchange, dollar was traded for "tomorrow" settlements close to 58.10 RUR, up by 25 kopecks compared to the end of the previous trade session, the highest since April 1 this year.

Euro was quoted at 63.74 RUR, up by 14 kopecks compared to the end of the previous trade session.

The day before, Brent was traded at around the 7 July lows of $55.10, the lowest since April 6.

China Manufacturing Purchasing Managers' Index (PMI) dropped to 48.2 points, the lowest reading since March last year, against previous month’s reading of 49.4, reflecting a rapid slowdown in this economic segment.