Via the Local:
Arid Uka, the 21-year-old Kosovar who has admitted to killing two US airmen in Frankfurt, was a loner only recently turning to radical Islamist ideology, according to investigators.
German federal prosecutors continue to piece together a profile of the man responsible for what is increasingly believed to have been a terrorist attack on US military personnel at Frankfurt Airport on Thursday.
Born in Kosovo but raised in Frankfurt, Uka is being described by investigators as a loner who took to radical Islam over the course of just a few weeks
(...)
Within just four or five weeks, Uka is thought to have established contact to radical Islamist preachers including the Moroccan Sheik Abdellatif and German Muslim extremist Pierre Vogel.
Though his family are devout Muslims, they are not considered to be Islamist radicals.(source)