The suspected killer of the family in Matapalo was arrested by the Nicaragua police. You can read the full details here.
Since Nicaragua and Costa Rica have no extradition treaty it’s unlikely that the suspect will be tried in Costa Rican’ courts.
What’s even more interesting about the case was that the crime was committed on Valentine’s Day and is possibly connected to a love triangle.
A local blogger also published this article describing how some of the government entities might be complicit in the crime since they refused to listen to one of the victims.