The man who killed one person and injured six in a supermarket knife attack in Hamburg was a "known Islamist", police say.
"He was known as an Islamist but not a jihadist," police spokesman Andy Grote said, noting that the suspect also suffered from "psychological" issues.
The man, a failed asylum seeker born in the United Arab Emirates (UAE), attacked customers at random on Friday.
Police said he acted alone and he was overpowered by passers-by.
The 26-year-old man, identified as Ahmad A, is a Palestinian from the UAE who is registered on an Islamist database, Mr Grote said on Saturday.
The attacker, who arrived in Germany in 2015 but could not be deported because he had no identification papers, was also suffering from mental health problems, officials said.
Police have carried out a search of the shelter in Hamburg where the man was living but said there was no evidence that he had accomplices or was part of a terror organisation.
It is not yet clear what the suspect's motivations were.