Last Update: 14:03
That quarterly figure, known as provisional data, can also be subject to revisions over time.
The quality of Greek statistical data is under constant scrutiny by Brussels since the country plunged into crisis in 2010, requiring to date three international bailouts to stave off bankruptcy.
Discrepancies in the way the budget deficit was calculated before 2010 - which angry euro zone partners say concealed the extent of the deficit - helped trigger the financial crisis that engulfed Greece and the euro zone.
A senior ELSTAT official told Reuters the suspension of the flash data was necessary because flash data was issued on the basis of incomplete information, which subsequently needed revisions when more data came in.
"We will probably not publish flash estimates for the next coming quarters after recent divergences," the ELSTAT official said.
There have been considerable differences in the past two quarters between flash data, issued 45 days after the lapse of the reference period, and provisional data that follows and is released within a 60 day period.
"We donÎ„t have all the necessary data for the flash estimates on time. We just have data only for two months of the quarter on employment and not the final data for the current account balance," the official said.
"We want to explore the availability of the necessary data sources and improve the consistency of the flash estimates."