How young people are lured into radicalization

Belgian town fighting against jihadi recruite... 01:50

BELGIUM -- Abdel Hamid Abaaoud is from Belgium. Police there carried out six raids on Thursday, in search of terror suspects.

Reporters and camera crews rushed to the scene of one of the raids, but the suspect from the house they were headed to had already been whisked away.

Paris terror attacks: Details on alleged ring... 02:30

The sullen atmosphere left behind showed why the jihadi recruiting grounds are so hard to penetrate.

Several men said they knew some of the Paris attackers. One told person told CBS News he smoked marijuana with terror suspect Salah Abdeslam, who is still on the run, four days before the attacks.

No one would talk to CBS News on camera.

"We've got families," one person said. "And we don't want trouble from the police."

Residents said being treated as second class citizens because they come from immigrant backgrounds, makes young men susceptible to the call of the jihadis. Recruiters allegedly trawl the central train station.

Molenbeek Deputy Mayor Ahmed El Khannouss said he's fighting a losing battle.

He said no one knew that ISIS had, "Developed what I call the Frankenstein of Terror, the power of convincing, of conditioning youths. No one was ready."

Abdelhamid Abaaoud
Abdelhamid Abaaoud, in undated image made available in an ISIS publication AP

No one except the potential recruits.

A woman from Molenbeek, who did not want to be identified, said her son left for Syria without warning. He was killed fighting for ISIS.

How Paris attacks changed the fight against I... 05:30

"There is somebody manipulating and brainwashing them," she said. "My son didn't just leave like that on his own."

Belgian police have put an appeal on their website for leads in the hunt for Salah Abdelslam, who rented a car used in the Paris attacks.

"He is extremely dangerous," it warned. "And likely armed."

In a statement released through his lawyer, the father of Abdel Hamid Abaaoud, the alleged mastermind, said Thursday night he was relieved that his son was dead.