Spanish police have launched an operation against the group Nucleo Nacional, with 12 people detained so far, including in Valladolid, according to police. The National Police said the device is being carried out across seven provinces, including Madrid, Asturias, Guadalajara, Valladolid, Pontevedra, Burgos and Alicante. The operation involves several searches, including at the group’s central headquarters, and remains open as police continue working. Police have not detailed how they linked the suspects to any alleged wrongdoing. They also have not specified the suspected offences being investigated or provided information about the identities of those arrested. Authorities confirmed the detention of 12 people belonging to Nucleo Nacional. Police have not said how many of the arrests, if any, took place in Valladolid, nor what specific actions were carried out in the province. The investigation remains ongoing, with further police actions not ruled out as the operation continues.