A 29-year-old man armed with a machete and a knife went to a police station in western Germany, where he threatened to kill officers and shouted in Arabic “Allahu Akbar” (God is greatest), German investigators said on friday.

The suspect, with Albanian citizenship, was caught by the police and no one was injured during the incident that happened at the police station in Linz, near Bonn, in the early hours of the morning on Friday.

He was taken into custody and suffered minor injuries during the arrest, police said. Prosecutors said he is suspected of attempted murder and Islamic extremist motives.

Police found a hand-drawn Islamic State flag on the wall during a raid on the 29-year-old’s apartment, prosecutors said.

“We have more than one indication that the defendant was motivated by radical Islam,” said Michael Ebling, interior minister of the western state of Rhineland-Palatinate.

The incident in Linz came a day after a man was shot dead by police in Munich. He was suspected of attempting to commit a terrorist attack.