The Friedrich Ebert School in Esslingen-Zel, near Stuttgart, Germany has been evacuated after a gunman was seen prowling on school grounds, sparking a police manhunt.
Police were called amid reports of a man with a gun lurking on the school premises Monday morning, as students were told to barricade themselves in their classrooms.
The armed man is described as being between 17 and 19, with a dark complexion and a beard.
An unidentified man was arrested in the town but later released, amid fears the suspect had escaped on a motorbike.
A local police spokesman said nobody was reported to have been hurt in the incident.
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