French President Francois Hollande on Thursday acknowledged facing growing terror menaces, but people and public interests are safe thanks to reinforced safety measures.

"There are threats that are particularly targeting France, since we have been committed in Mali. There are (menaces) due to our position on Syria and the struggle we engaged against terrorism," the French president pointed out during a sudden visit to Charles de Gaulle airport on Thursday morning.

"Everything was in place so that the safety of French is guaranteed, and it is," assured the president.

Asking not to exaggerate the terrorism threats, Hollande noted that "there is no comparison to be made, no link to be made, particularly in relation to the United States (blast)."

Earlier this week, Interior Minister Manuel Valls confirmed to keep the "Vigipirate" alert at "reinforced red," a relatively high security alert to face eventual terror attack after Boston explosions.

France has been the target of terrorist groups' attack following its military commitment mainly in Afghanistan and in Mali. A total of 14 French nationals are now in hands of al Qaeda-linked groups in the Sahel region.

The calm in Paris was broken in 1995 with a major bomb in the capital subway that killed eight people and injured 117.