According to Skai TV, the telex notice warning of the attack before January 17 has been sent to a number of European countries, with most likely targets being Belgium, the Netherlands and the United Kingdom.
"The terrorist attack is being prepared by four or five Islamists based in a European country. The warning contains the names of suspected terrorists, who are assumed to have accomplices in Lebanon, Saudi Arabia and Russia," Skai TV said.
Europol is the European Union’s law enforcement agency assisting EU's member states in their fight against serious international crimes and terrorism.
Earlier on Tuesday, Europol Director Rob Wainwright said that as many as 5,000 European citizens have traveled to the Middle East to fight alongside local extremist militias and could return home to carry out attacks similar to those in Paris.
Last week’s terrorist attacks in the French capital, targeting the office of the Charlie Hebdo satirical magazine and a kosher supermarket in Porte de Vincennes, claimed the lives of 17 people, including three police officers.
