The Greek side in talks with creditors has reportedly left the negotiating table in Brussels on Sunday.

According to reports from the Belgian capital, major differences remain between the radical leftist government and creditors, namely, the IMF, EC and ECB.

Community sources, speaking to protothema.gr, cited the possibility of an extraordinary EuroWorking Group to take place on Monday, whereas the “Greek issue” would not be on the agenda of a June 18 Eurogroup meeting, given the lack of progress in talks.

The same sources said creditors are adamant over a permanent decrease in state spending worth two billion euros a year, or roughly 0.5% of current GDP in order to cover a resurfaced fiscal deficit – something that finds Athens in the opposition.

One well-placed observer of the entire Athens-creditors scope of negotiations since February, FT’s Peter Spiegel, said the brief meeting in Brussels (40 to 45 minutes) is a “bad sign”, while he cited a conversation with Greek Minister Nikos Pappas after the talks were abruptly ended.

“We’ll see” was Pappas’ answer, followed by a smile, on whether the brief talks were a bad sign.