Fed official Hammack said the main concern is that inflation remains too high and is still rising.

Airlines including Air China said fuel surcharges on mainland China passenger tickets sold from 0000 on June 5 will be reduced. New rates: 80 yuan per sector for routes up to and including 800 km, 150 yuan per sector for routes over 800 km. Infants are exempt; children, veterans disabled in service and public security police disabled on duty will be charged half the surcharge. The move lowers current levels by 10 yuan on routes ≤800 km and by 20 yuan on routes >800 km.

Sources said the Canada Pension Plan Investment Board (CPPIB) is expected to be among institutions submitting letters of intent to invest in Uniper next week.