Locals in Niger Delta complain of health problems, but Chevron says two-week-old blaze is causing no harm.

A fire at an American-owned gas rig in the Niger Delta is still burning two weeks after an accident started the blaze.

Locals say the fumes are causing massive environmental damage and health problems. But the oil firm Chevron, which owns the rig, denies the fire is causing any harm.

Al Jazeera’s Yvonne Ndege reports