A 13-year-old boy in Kotka told police about his father’s unusual behaviour before his mother was killed. The boy said he is very sure that his father had planned the act in advance.

The suspect is a 52-year-old writer who is reported to have killed his 49-year-old wife, an artist, a month earlier. Police have not yet disclosed further details about the method or the stage of the investigation.

According to Iltalehti, the boy’s account is part of the material investigators are using to reconstruct the events and assess whether the killing was premeditated. The case highlights how observations from within a family can become important evidence in a homicide investigation.