China has delayed the release of third-quarter gross domestic product data a day before the report was scheduled for release, fueling investor uncertainty and concerns about the economy’s slowdown.

The National Bureau of Statistics (NBS) updated its release schedule Monday, with the dates for major economic indicators due this week marked as "delayed.” It didn’t give a reason for the delay and provided no information about a new release date.

A previous schedule had the data planned for release at 10 a.m. Tuesday. Indicators that were delayed include quarterly GDP as well as monthly industrial output, energy production, fixed-asset investment, property investment and sales, retail sales and home prices. Official trade figures also weren’t released last week.