Germany rocked by fourth attack in a week

A Syrian man who tried unsuccessfully to claim asylum in Germany pledged allegiance to the Islamic State group and vowed the nation’s people “won’t be able to sleep peacefully anymore” in a cellphone video before blowing himself up outside a wine bar, wounding 15 people, authorities said Monday.

The assailant set off a backpack laden with explosives and shrapnel Sunday night after being refused entry to a crowded music festival in the Bavarian city of Ansbach because he didn’t have a ticket.

It was the fourth attack to shake Germany in a week, and the second claimed by the Islamic State group.

Three of the attacks were carried out by recent immigrants, rekindling concerns about Germany’s ability to cope with the estimated 1 million migrants registered entering the country last year, an influx that has since dwindled as the flow of newcomers slowed.

Bavarian Interior Minister Joachim Herrmann said a laptop with extremist videos was found at the apartment of the suspect, a 27-year-old Syrian identified only as Mohammad D in line with German privacy laws.

A video on his cellphone showed him declaring loyalty to the Islamic State group and announcing a “revenge act against Germans because they are standing in the way of Islam.”

The suspect also declared Germans “won’t be able to sleep peacefully anymore,” Herrmann said.