Tampere District Court imposed a life sentence on a nurse from the city of Nokia who had been found guilty of murder and attempted murder in the insulin poisoning death of a patient.
The nurse, 27-year-old Meri-Tuulia Lönnqvist, is to appeal the case, said her lawyer Pertti Patrikainen immediately after the decision, suggesting that there was room for reasonable doubt.
The Tampere unit of the National Bureau of Investigation (NBI) is also investigating another case in which Lönnqvist is implicated in a death by morphine overdose. A final assessment by a forensic pathologist is still to come, but the matter could move forward already this month.
Already six months ago the court found that Lönnqvist had committed the acts that she was accused of, but it was not until now that the court ruled that murder and attempted murder were involved.
The attempted murder was that of an eight-month boy - the son of a relative.
In the murder, the victim was an elderly developmentally disabled woman at the Ylinen rehabilitation centre where the defendant was working.
The court found that the defendant had acted with firm determination in both cases.
The poisoning of the baby took place in 2007. The fact that a defenceless child was involved was taken as an aggravating circumstance.
The murder, which took place about a week later, was executed according to a meticulous plan.
The defendant was also found to be of sound mind in a psychiatric examination.