"It was based on BPS' observation results in 90 cities," BPS head Suhariyanto said during a virtual press conference here on Thursday.
"The deflation was mainly influenced by lower chicken and egg prices," the BPS leader explained.
According to the official, on an annual basis, the country's CPI recorded an inflaton of 1.42 percent year-on-year last month.
Last month, Bank Indonesia (BI) decided to hold the BI 7-Day Reverse Repo Rate at 4.00 percent, while also maintaining the Deposit Facility (DF) and Lending Facility (LF) rates at 3.25 percent and 4.75 percent, respectively.
The decision was consistent with the need to maintain rupiah exchange rate stability against a backdrop of projected low inflation.