There have been renewed threats at several German schools and radio stations following a series of bomb threats that targeted at least seven schools and the public broadcaster ZDF on Monday.

A secondary school in the southern state of Bavaria was evacuated after it received a second bomb threat on Tuesday morning.

Police spoke of a threat that came in via email with links to the Islamist militant group Hamas.

In the Thuringian capital, Erfurt, threats were received at three schools.

These were not bomb threats but threats of violence, police said. The buildings of the schools had not yet been searched.

Meanwhile, a broadcasting centre in Thuringia housing three radio stations, Antenne Thüringen, Landeswelle Thüringen, and Radio Top40, was evacuated.

They were evacuated after the centre received a bomb threat via email, which police said was sent by Hamas. According to the police, tests for explosives are being carried out in the building.

On Monday, threats against several schools triggered major police operations nationwide. Schools in Bavaria, Baden-Württemberg, North Rhine Westphalia, Saxony, and Thuringia were affected.

The headquarters of public broadcaster ZDF in the western city of Mainz were also evacuated briefly because of a bomb threat.

Nothing suspicious was found, and police gave the all-clear on Monday.

(dpa/NAN)