A teacher has been killed in an attack at a vocational school in the southwestern German town of Ludwigshafen, ZDF television reported on Thursday.
A police spokesman in the town said a 23-year-old suspect was arrested and the school was in lockdown after all the pupils had been evacuated. The incident occurred at about 10:00 local time (0900 GMT).
It is still unclear whether others have been injured in the attack.
Reports vary as to what weapon was used, with some saying the attacker used a knife while several witnesses claimed they also heard shots.
The Ludwigshafen vocational school is one of the largest in the Mundenheim district, with 130 teachers and more than 3,200 pupils.
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