BRUSSELS — Much about Abdelhamid Abaaoud's path to armed Islamic radicalism remains mysterious.
In the words of Koen Geens, the Belgian justice minister, he mutated from a student at an upscale Brussels school into "an extremely professional commando," one seemingly able to slip across borders at will. Someone who openly mocked the inability of Western law enforcement agencies to catch him.
On Wednesday, the fate of the son of an immigrant shopkeeper from Morocco remained unclear. Police raided a suburban Paris apartment where they believed he was hiding. The siege ended with two deaths and seven arrests but no definitive information on Abaaoud, who French authorities have called the mastermind of the violence that killed at least 129 in Paris last week.
The wanted jihadi's own father believes prison — where he served time for petty crimes — changed him for the worse. After his son got out, Omar Abaaoud noticed "signs of radicalization," the elder Abaaoud's lawyer, Nathalie Gallant, told RTBF broadcasting Wednesday.
If so, that would fit the pattern of a number of jihadis who were radicalized in prison.
A person in Belgium familiar with the investigation told The Associated Press that Abaaoud became "close" while living in the Molenbeek neighborhood to another immigrant's son who had his own troubles with the law, Brahim Abdeslam. The person spoke on condition of anonymity because he wasn't authorized to speak publicly.
On Friday, Abdeslam was one of the suicide bombers who blew himself up in the murderous wave that shook Paris. Abdeslam's brother Salah, who authorities say also was an acquaintance of Abaaoud, is being sought as a suspected accomplice.
Abaaoud came onto the international radar as a radical Muslim combatant for the first time in February 2014, said Jasmine Opperman, a senior director with the independent Terrorism Research & Analysis Consortium (TRAC).