Two young people aged 16 and 17 are said to have seriously injured a man in Alsfeld (Vogelsbergkreis).
The 16-year-old was in a conversation with a 34-year-old on Tuesday last week when the 17-year-old hit the man from behind with a baton in the head and stabbed him with a knife, police and prosecutors said on Monday with.
Alsfeld - The man suffered life-threatening injuries and was taken to hospital.
His health is now stable.
After the fact, the 17-year-old fled and was arrested after a manhunt.
The police then caught his 16-year-old girlfriend on Friday.
An arrest warrant had been issued against the two teenagers with no criminal record on the basis of an urgent suspicion of attempted murder and dangerous joint assault.
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The exact background of the act was initially unclear.
"Since everyone involved is known, however, a dispute in the private sphere seems likely," it said.
dpa