European shares hit 3-week low on Iraq concerns
* FTSEurofirst 300 down 0.7 pct at lowest since June 5
* GDF-Suez sags as France sells stake at bottom of range
* U.S. GDP data eyed
By Blaise Robinson
PARIS, June 25 (Reuters) - European shares dropped on Wednesday, mirroring a pull-back on Wall Street and in Asia as mounting worries over violence in Iraq prompted investors to book profits after a strong run.
Shares in GDF Suez dropped 3.1 percent after the French state sold a 3.1 percent stake at a price of 20.18 euros per share, the bottom of a range for the share placement set by bookrunners on Tuesday evening.
By 0755 GMT, the FTSEurofirst 300 index of top European shares was down 0.7 percent at a three-week low of 1,377.61 points.
The index had hit a 6-1/2 year high last week, before geopolitical worries sparked a bout of profit-taking.
Security forces fought Sunni armed factions for control of the country's biggest oil refinery on Tuesday and militants launched an attack on one of its largest air bases less than 100 km (60 miles) from the capital. Continuación...