Five tonnes of perfectly packed khaki uniforms were hidden under secondhand clothes in two supply containers at the port in Valencia, eastern Spain

Spanish police have uncovered an alleged Islamic State supply network after seizing 20,000 new military uniforms destined for jihadist fighters in Syria.

Five tonnes of perfectly packed khaki uniforms were hidden under secondhand clothes in two supply containers at the port in Valencia, eastern Spain.

According to transit documents, the uniforms had been sent from Saudia Arabia to Spain, but their appearance suggested they had originated in a Nato country. A quantity of fertiliser, which can be used to make explosives, was also found at another location and seven men were arrested.

The gang was led by Ammar Termanini, 43, a Syrian who had previously lived in Britain, Belgium, and the Netherlands, before moving to Spain in 2012, according to Eloy Velasco, the investigating judge.