Eighteen people were injured in a knife attack in Hamburg station on Friday evening, Germany's Bild newspaper reported, and local police confirmed they had arrested the suspected assailant.
Four victims are in critical condition and six others are seriously injured, Bild reported, saying the motive for the attack was unclear.
Police said the suspected assailant was a 39-year old woman who allowed herself to be arrested without resistance.
"So far we have no evidence that the woman could have acted with political motivation," said Hamburg police spokesperson Florian Abbenseth. "Rather, we have findings on the basis of which we are now investigating in particular whether she may have been in a state of mental distress."
German Chancellor Friedrich Merz said in a post on social media platform X that the news from Hamburg was "shocking."
"My thoughts are with the victims and their families," he said.
Lebanon's Hezbollah warned Israeli residents to evacuate towns within 5 km of the border between the countries in a message posted on its Telegram channel in Hebrew early on Friday.
The US House of Representatives rejected an effort on Thursday to stop President Donald Trump's air war on Iran and require that any hostilities against Iran be authorized by Congress, backing the Republican president's military campaign.
Foreign ministers from the Gulf Cooperation Council (GCC) and the European Union have strongly condemned the Iranian attacks targeting GCC states, calling them a direct threat to regional and global security.
US President Donald Trump claimed the right to join Iran in deciding its next leader as the war escalated, with US and Israeli jets hitting areas across the country and Gulf cities coming under renewed attack.
The United States and interim authorities in Venezuela have agreed to re-establish diplomatic and consular relations, the U.S. State Department said on Thursday, aiming to foster a peaceful transition to elect a new government in the South American country.
His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai and the UAE's Deputy Prime Minister and Defence Minister, has discussed the latest regional developments with Saudi Defence Minister Prince Khalid bin Salman bin Abdulaziz Al Saud.