This is third act of violence against civilians in Germany in 10 days:
1) On July 18, a 17-year-old Afghani youth who had sought asylum in Germany was shot dead by police after wounding four people from Hong Kong, some of them severely, with an axe on a train. A local resident near the city of Wuerzburg was also attacked and injured.
2) On Friday, an 18-year-old Iranian-German who was obsessed with mass killings shot dead nine people in Munich before turning his gun on himself as police approached.
3) Today (this incident), a 21-year old Syrian refugee killed a woman with a machete and injured two other people. He has been arrested by police.