Tightened security measures are being implemented at airports and railway stations across Germany after a new threat of terrorism has emerged.

Parcel bombs were discovered on cargo planes last month, one of which had been sent via Cologne in Germany but was intercepted in the UK.

The country’s interior minister, Thomas de Maiziere, said extra security measures will be in place until further notice after a tip-off from an unnamed country gave “concrete indications” of attacks planned for the end of this month. He told a news conference in Berlin: “There are grounds for concern, but not for hysteria.”