KEY POINTS
  • Oil prices fell 2 percent on Monday, dropping below $49 a barrel earlier in the session.
  • Two new surveys indicated OPEC production rose in July.
  • U.S. crude rose above $50 a barrel for the first time in two months on Monday.

Oil prices plunged back below $49 a barrel on Tuesday after more reports that OPEC's output rose last month despite the cartel's deal to slash production.

A survey of analysts conducted by Bloomberg News suggested OPEC's July output rose by 210,000 barrels a day. Separately, market-monitoring firm Petro-Logistics said the producer group's output was up by 145,000 barrels a day last month.