Kazakhstan's biggest oil producer, Tengizchevroil, has restarted operations at its first-generation oil and gas separation plant which had been briefly suspended on Tuesday after a toxic substance was released, the company said. Chevron, ExxonMobil, Lukoil and KazMunayGas are partners in the venture, which said the event was caused by an unplanned power loss and there were no injuries, spills or equipment damage. "KTL (oil and gas separation plant) start-up is proceeding safely." The Central Asian country's energy ministry said earlier on Tuesday it would investigate the incident, describing it as "emission of toxic substances into the atmosphere".

MOMBASA, Kenya (AP) — Kenya's president on Tuesday opened the country's largest infrastructure project since independence, a Chinese-backed railway costing nearly $3.3 billion that eventually will link a large part of East Africa to a major port on the Indian Ocean as China seeks to increase trade and influence.