Sanna Sillanpää

Sanna Riitta Liisa Sillanpää (born 15 April 1968) is a Finnish woman who shot three men to death with a rented 9mm Beretta 92FS semi-automatic pistol on 21 February 1999 in a shooting range in , Helsinki, and wounded another man, who received lifetime injuries. One man present was not harmed. One of the dead was the shooting club's 23-year-old supervisor.

As Sillanpää was leaving the club, she said: "This is what they taught us at the FBI academy, isn't it?". She then traveled from the Helsinki center to the Helsinki-Vantaa Airport in a city bus, carrying a gun and ammunition. At the airport, she was trying to buy a ticket to "somewhere". Sillanpää was caught after four hours as she was boarding an airplane to London. Before boarding the plane she left the gun in a trash can in the airport terminal. It was discovered by a cleaner.

Trial At the trials and hearings, Sillanpää did not speak at all. No motive for the act was found. In mental health examinations Sillanpää was found to have schizophrenia,

Sillanpää, 30 years old at the time, has a Master's degree in computer science and is an IT expert who worked for Fujitsu Finland Oy in Helsinki.

After the incident, the Ministry of the Interior demanded that the security and permissions of commercial shooting ranges should be checked. The rules for first-timer participation on shooting ranges were subsequently made more strict.