A knife attack that killed one tourist and seriously injured another in the German city of Dresden in early October is being treated as a terrorist attack, prosecutors said Wednesday.
A 20-year-old Syrian man was arrested on Tuesday evening and is believed to have an Islamist background, federal prosecutors in the city of Karlsruhe said, just days after the shocking Islamist beheading of a teacher in France.
The suspect allegedly attacked the two tourists, who had travelled together from North Rhine-Westphalia, on 4 October.
One of them, a 55-year-old man, later died from his injuries in hospital. The other, aged 53, survived with serious injuries.
More recently, an Iraqi man caused a series of motorway accidents in Berlin injuring six people, in what prosecutors described as a suspected Islamist attack.
After crashing into a motorbike, he got out of his mangled vehicle and told witnesses a metal box in his car contained a "dangerous object", which police said turned out to be false.
In 2018, an Islamist and his wife were convicted of planning a biological bomb attack in Germany with the deadly poison ricin.
The pair had ordered castor seeds, explosives and metal ball bearings on the internet to build the toxic bomb.
The man was sentenced in March to 10 years in prison while his wife received an eight-year sentence in June.
Since 2013, the number of Islamists considered dangerous in Germany has increased fivefold to 680, according to security services.
The far right has often accused Chancellor Angela Merkel of having contributed to the Islamist threat by opening the country's borders to hundreds of thousands of migrants in 2015.