Greece creditors raise 'serious concerns' about spiralling debt levels

Analysis by trio of European creditors forecasts Greek debt to peak at 201% of GDP in 2016 and that debt relief may be necessary

Greece's European creditors have underlined the temporary nature of the country's surprise return to growth by warning that they have "serious concerns" about the spiralling debts of the eurozone's weakest member.

The economic news came as Greece's parliament met in emergency session on Thursday to ratify a new bailout deal, although it was unclear whether the multibillion-euro agreement had the vital backing of Germany.

Related: Greek economy posts surprise recovery ahead of bailout vote - live