An explosive package found at a UK airport sparked a major terror alert on both sides of the Atlantic last night. President Obama warned of a ‘credible terrorist threat’ after the package, a modified printer cartridge, was discovered at East Midlands Airport. It had been carried on a plane from Yemen. A similar device was found in Dubai. Both contained ‘explosive material’ and were discovered on cargo planes that had stopped en route from Yemen to Chicago.' The packages, thought to have been the work of Al Qaeda, were addressed to synagogues in the American city. The one found in Britain was intercepted by MI6 after a tip-off to one of its sources in the Arabian country, it was reported last night. Security services were placed on high alert. The first package was found in the early hours yesterday. It had arrived on a United Parcel Service (UPS) flight which stopped at East Midlands Airport, on the Derbyshire and Leicestershire border. It was taken off the plane and placed in a UPS storage depot just 300ft from the runway and half a mile from the passenger terminal, which is used by five million a year. (Daily Mail)