THIS is the first picture of the son detained by German police and quizzed over brutal stabbing of his mum.

Police arrested the teenager and his 17-year-old sister after newly elected mayor Iris Stalzer was allegedly knifed in a frenzied attack near her home.

Pictures show the teen being led away to a police van wrapped in a blanket after the horror.

Paramedics rushed the 57-year-old Social Democrat to hospital with life-threatening injuries from her apartment in Herdecke, North Rhine-Westphalia, at around lunchtime on Monday.

Initial reports said she was allegedly stabbed in the stomach and back and she crawled back inside the home.

The son told police that he found his mum inside their home following the brutal attack.

Her 17-year-old daughter was also inside the flat at the time

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