The ringleader of the Nov. 13 attacks in Paris had plans to strike Jewish targets and to disrupt schools and the transportation system in France, according to sources close to the investigation.

Abdelhamid Abaaoud, a Belgian national of Moroccan origin, also boasted of the ease with which he had re-entered Europe from Syria via Greece two months earlier, exploiting the confusion of the migrant crisis and the continent's passport-free Schengen system, the sources said on Friday.

Their comments, confirming excerpts from a confidential police witness statement leaked to a French magazine this week, fleshed out a picture of the Islamic State militant who spearheaded the Nov. 13 attacks that killed 130 people and injured over 350 more in cafes, a concert hall and sports stadium in Paris.