Ten people were injured on Friday, one seriously, in a knife attack on a bus in the northern city of Luebeck in Germany. The perpetrator has been arrested. “The identity of the perpetrator has been clarified: a 34-year-old German citizen resident in Luebeck,” police added on Twitter. “There are currently no indications the man was political radicalized and no signs of a terrorist background.” “There were no dead,” the police and state prosecutor’s office said in a statement. “The background to the crime is still unclear and the subject of the ongoing investigation.” The police added that a backpack was found in the bus from which smoke was appearing. It was examined by a bomb squad, which found a “fire accelerant” but no explosives. The local Luebecker Nachrichten, without citing its source, said the attacker was originally from Iran who now had German nationality and had lived in Luebeck for years. It said at least 14 people were wounded, two seriously. “The bus was full,” the police said, appealing to passengers who fled the scene to contact them. Luebecker Nachrichten quoted a witness as saying: “One of the victims had just given up his place to an older woman, when the attacker stabbed him in the chest.” Prosecutor Ulla Hingst told n-tv television the bus driver stopped the vehicle and let the passengers out after the attack Schleswig-Holsteins state interior minister, Hans-Joachim Grote, said his information was that nine people were injured — six with the knife, two passengers who fell, and the driver, who was punched. The bus was traveling from Luebeck to the neighboring seaside resort of Travemuende, where an annual regatta, the Travemuender Woche, was opening later Friday. Grote said that authorities believe security for the regatta is sufficient.