Katri Virtanen died on 11 December 2010 at the age of 107 years, 102 days. At the time of her death, she was the second-oldest living person in Finland.
- Report at Katri Virtanen at 107 (dead link)
- "Ahkera Martta oli Tampereen vanhin", Aamulehti 9.1.2011
- Population 31.12. by Sex, Area, Age and Year Statistics Finland's PX-Web databases
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