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A state of emergency has been declared in Spain after mass blackouts left millions of people in the dark. The outage also impacted neighbouring Portugal with authorities now investigating if a cyber-attack was to blame. Subscribe to 10 News First to get the latest updates and breaking news: https://bit.ly/37DDbL1 Join the conversation and follow us on: TikTok: http://www.tiktok.com/@10newsfirst/ Instagram: http://www.instagram.com/10NewsFirst/ Twitter: http://twitter.com/10NewsFirst Facebook: http://www.facebook.com/10NewsFirst/ 10 News First airs at 5pm, seven nights a week in your local market on Network 10. Missed the bulletin? Catch up at https://10play.com.au/news