[Billthedrill]

He [the suspect] was on a ‘S’ for Security List, meaning he was a danger to national security, and is believed to have been ‘radicalised’, according to Interior Ministry sources.

"Radicalized"...now whatever could that mean?

[Segovia]

if he was known to authorities, on a terrorist list, and “radicalized”, why was he walking around the country free and able to commit this massacre?

[a fool in paradise]

>>”Radicalized”...now whatever could that mean?

...an especially reactive atom or group of atoms that has one or more unpaired electrons especially : one that is produced in the body by natural biological processes or introduced from an outside source (such as tobacco smoke, toxins, or pollutants) and that can damage cells, proteins, and DNA by altering their ...

[Capt. Tom]

"Radicalized"...now whatever could that mean?

To me it means he got religion, and decided to do what his God (Allah) wants done.
These Kafirs(Infidels) are not going to convert to Islam, and they are not going to pay protection money (Jizya) so they should be killed.
That is what Allah wants , that is the example set by Allah's messenger Muhammad, and that is what fundamental Muslims have done for the last 1400 years. - Tom