Oil prices edged lower on Tuesday after surging more than 5% in the previous session, as conflicting signals from Washington and Tehran over the future of US-Iran negotiations prompted investors to reassess geopolitical risks in the Middle East.

Equities investors lost N181 trillion in a swoop on Monday over risk-off sentiment spotted across key sectoral indices.  The Nigerian Exchange (NGX) opened trading for the month in negative territory, with key market performance indicators declining by 1.3%.