BERLIN:
An explosion went off close to an office for migration in the town of Zirndorf near Nuremberg on Wednesday, German broadcaster Bayerischer Rundfunk reported, adding that it was not yet known whether there were any casualties.
The broadcaster said on its website that a suitcase filled with aerosols was detonated, adding that it was unknown who had caused the explosion.
The attack comes two days after a Syrian refugee blew himself up after being turned away from an open-air music festival.
Earlier on Sunday, a Syrian man killed a woman with a machete and wounded two others outside a bus station in the southwestern city of Reutlingen before being arrested. Police said there were no indications pointing to terrorism.
Two days earlier, a man went on a deadly rampage at a Munich mall, killing nine people and leaving dozens wounded.
And an axe attack on a train near Wuerzburg last Monday wounded five. A 17 year old Afghan asylum seeker was shot and killed by police as he fled the scene.
On Sunday, authorities said they were alerted to an explosion in Ansbach's city's center shortly after 10 pm.