Police deployed after 'explosion' near Migration office in Germany

Local broadcaster Bayerischer Rundfunk reported, without citing sources, that a suitcase containing several spray cans blew up near the refugee center in Zirndorf, outside the city of Nuremberg.

No causalities were reported.

The blast occurred about 200 metres (yards) from the centre in the Bavarian town of Zirndorf, where police were on the scene.

"There is no indication at the moment that a bomb was detonated in the suitcase," police said in a statement.

"It is possible it was a spray can inside the suitcase that caused the explosion. No one was reported injured."

The incident occurred in Bavaria, where authorities are on edge after three attacks in a one-week period.

On Sunday, a Syrian asylum seeker with suspected links to the Islamic State group blew himself up near a music festival in Ansbach, wounding 15 people.

Nine people were killed in a shopping centre shooting spree in Munich on Friday, just six days after four passengers on a train and a passer-by were wounded in an axe attack in Wuerzburg.

Bavaria has been a gateway for the influx of migrants and refugees to Germany, which saw a record 1.1 million people arrive last year.

Agencies contributed to this report.