Wielding a large kitchen knife, Abdullah al-H H, a 20-year-old Syrian, allegedly stabbed the couple, who were visiting Dresden on 4 October.
Prosecutors claim al-H H, based in Aleppo, targeted the couple because they were gay and was motivated by radical Islamist ideology, being a recruiter for the Islamic State (ISIS).
He was charged last Thursday (11 February) with murder and attempted murder, according to Deutsche Welle.
