Oil prices fall into bear market on rising supply, economic concerns

SINGAPORE (Reuters) - Oil markets on Friday remained weak as rising supply and concerns of an economic slowdown pressured prices, with U.S. crude now down by around 20 percent since early October.U.S. West Texas Intermediate (WTI) crude oil futures were at $65.60 per barrel at 0509 GMT, down 4 cents, or 0.1 percent from their last settlement. WTI is set to fall for a fifth week, down 4.1 percent so far this week. Front-month Brent crude oil futures were at $70.69 a barrel, 4 cents above their..