Former Prime Minister of Greece Lucas Papademos along with two other people were wounded by an explosive device hidden in an envelope, according to police.
The 69-year-old was rushed to hospital following the blast inside a car in central Athens on Thursday. A government spokesman claimed that the explosion was an attack and said all three who had been hurt - including Mr Papademos - were in a "stable condition, conscious and are undergoing all the necessary medical tests".
Papademos was appointed caretaker prime minister in November 2011 following concerns the country would exit the Eurozone. He remained in the position until May 2012 when elections were held.
Previously, he had served as the vice president of the European Central Bank from 2002 to 2010 and as governor of the Bank of Greece from 1994 to 2002.