The drop was due largely to a decline in production at the mechanical engineering sector, the office said.
Analysts polled by Reuters had predicted a 0.2% rise.
In September, production fell 1.3% month-on-month, according to revised data compared to an reported decline of 1.4%.initially
The office published more detailed data on its website.
(Writing by Ozan Ergenay and Linda Pasquini, editing by Kirsti Knolle)