As a result of his escapes and continued thievery, Haapoja was sentenced to life in prison in 1874. After his last escape, he petitioned for his sentence to be changed to an exile to
Siberia. This was accepted and he was sent to
Omsk oblast in 1880. During his stay there, he is reputed to have killed a man in 1886, after which he was exiled to East Siberia. Folk stories claim that during this time Haapoja killed two other famous Finnish criminals, Juha Antinpoika Leskenantti (aka
Anssin Jukka) and
Kaappo Sutki, but these tales are likely false as they offer no conclusive proof. Around 1889, Haapoja decided to escape Siberia and return to Finland. He later claimed that he intended to emigrate to
America. He raised money for this escape by committing a series of robberies and murders. He probably killed at least three men and was involved in the murder of a fourth. He also obtained a
passport that belonged to a Russian man whose fate remains unclear. Haapoja returned to Finland in September 1890. A month later, he murdered and robbed a
prostitute, Jemina Salo. He was captured at
Porvoo a couple of days later and recognized. At his trial Haapoja behaved arrogantly, confessing to this murder as well as to one of the murders he had committed in Siberia. He hoped that he would be sent back to Siberia but instead, the court gave him a second life term in prison. On October 10, 1894, Haapoja tried to escape from prison yet again. During this attempt, he killed a guard and wounded two others. When he realized that he couldn't get out, he attempted to commit suicide by stabbing himself, but the wound was not fatal. However, as soon as he had recovered from the self-inflicted stabbing wound, he hanged himself in his cell on January 8, 1895. His skeleton was kept in the Museum of Crime in
Vantaa for a long time, until he was finally buried in
Ylistaro in 1995. Writer
Kaijus Ervasti wrote a book about Matti Haapoja called
Murhamiehen muotokuva – Matti Haapoja 1845–1895 ("Portrait of a murderer – Matti Haapoja 1845–1895"). ==Victims==