UPDATE 2:09 p.m. EST:
Greek police said the terror group Conspiracy of Fire Cells was behind the letter bomb at the IMF in Paris, AFP reported.
Parts of Greek stamps were reportedly found in the debris of the letter bomb.
UPDATE 8:18 a.m. EST:
Paris police confirmed the explosion at the International Monetary Fund was due to a letter bomb. The person who opened the bomb was "slightly" injured, Reuters reports.
No suspects have been identified. However, on Wednesday, a militant Greek group, Conspiracy of Fire Cells, claimed responsibility for a parcel bomb mailed to German Finance Minister Wolfgang Schaeuble. The group also claimed responsibility for a 2010 wave of letter bombs.
ORIGINAL STORY: An explosion at the International Money Fund office in Paris injured one person Thursday, Reuters reports.
Local police said the explosion likely came from a letter bomb. The victim's condition is not yet known.