A man has been seriously injured in a stabbing near the Holocaust Memorial in Berlin, Germany.
The attack took place at around 6pm local time (17:00 GMT), Police X (formerly Twitter) said. The incident is under investigation and a large police presence has been deployed in the area.
Images show emergency services vehicles and armed police deployed at the scene. Police have cordoned off the area and are continuing their investigation.
The injured man, a 30-year-old Spanish tourist, was taken to hospital with serious but non-life-threatening injuries, doctors said.
Police have arrested a male suspect, but it is not yet certain whether the attacker and victim knew each other beforehand.
Police also said they could not yet confirm what type of weapon was used in the attack.
Police said rescue workers have provided psychological support to some people who witnessed the incident.
The attack took place on the north side of the memorial, which is located directly opposite the US Embassy.
Berlin's "Memorial to the Murdered Jews of Europe" is Germany's central Holocaust memorial. It covers an area of about 19,000 square meters and was built to commemorate the six million Jews killed by Nazi forces during World War II.
Hours after the incident, Swedish police said they had arrested three people near the Israeli embassy in Stockholm, accused of planning a violent crime.
"We are unable to comment on possible motives," Swedish police spokeswoman Susanna Rinaldo told Reuters news agency.
However, there is no information yet on whether the Stockholm arrests are connected to the Berlin attacks.
Security has been beefed up in Berlin following the incident. Police have urged the public to be vigilant and to report any suspicious activity to authorities.
Investigators said it is not possible to confirm the root cause of the attack and the identity of the suspect until the investigation is complete.
