Hamburg stabbings suspect was known Islamic radical and mentally unstable

A Palestinian man who allegedly stabbed one person to death and injured six others in Hamburg was known to German authorities as a suspected Islamic radical but was also psychologically unstable, officials said.

The suspect, a 26-year-old who had no identity papers other than a birth certificate showing he was born in the United Arab Emirates, was quickly overwhelmed by passers-by and arrested after Friday's attack at a supermarket in Hamburg's Barmbek district.