Gunmen killed two couples overnight in similar encounters in Limón and in Desamparados, investigators reported.
The Desamparados murders took place about 7 p.m. in Las Tablas, San Rafael Abajo de Desamparados.
The primary victim was a 35-year-old man with the last name of Obando. The man was near the local sports plaza when the gunman fired and left. A woman, 27, with the last name of Moreno, was nearby and rushed to aid the dying man. That is when the gunman returned and shot her twice, fatally.
The murders in Barrio Corales 3, Limón, took place about 3 a.m. A couple had just gotten out of a taxi when a gunman appeared and killed them both. They were identified as a 32-year-old man with the last name of Alfaro and a 19-year-old woman with the last name of Villalta.
In neither incident was there an apparent motive, said the Judicial Investigating Organization.