Oil prices fell but kept on track for a monthly rise of about a fifth, as more supplies flowed through crucial maritime chokepoints, despite a lack of major breakthroughs in talks between the United States and Iran, Reuters reports.

Brent futures fell $1.03, or 1.2 per cent, to $88 a barrel by 0215 GMT, while US West Texas Intermediate (WTI) crude slipped $1.50, or 1.8pc, to $82.09 a barrel. On a monthly basis, both benchmarks were set to rise about 20pc.