A 30-year-old Spanish tourist was seriously injured in a stabbing attack at Berlin's Holocaust Memorial on Friday evening.

The suspect, a 19-year-old Syrian refugee, was arrested three hours later near the site, with blood on his hands.

Authorities have yet to determine the motive behind the attack, and the investigation is ongoing.

The victim, who suffered multiple stab wounds, is in stable condition after being treated at a hospital.

The memorial, a tribute to the six million Jews murdered during the Holocaust, was cordoned off as police conducted a large-scale search.

The suspect, who had no identification on him, is set to appear before a judge.

The incident has raised questions about security and the suspect's background.