FRANKFURT: German industrial production decreased in September, weighed down by falling activity in the manufacturing and construction sectors, the economy ministry said on Friday. The ministry calculated that factory output contracted by 1.1 per cent in September compared with a month earlier, corrected for seasonal factors. It was the second consecutive monthly decline after output dropped by 0.6 per cent in August. Manufacturing output was down by 1.4 per cent month-on-month and construction output fell by 0.9 per cent, while energy output edged up by 0.3 per cent, the ministry said.