A 14 year-old girl and her parents were found dead at their home in Piaseczno near Warsaw, Thursday evening.
Police spokesman spokesman Maciej Karczyński said they received a call from relatives of the family saying they had not had any contact with them for several days.
"When police arrived at the house they found three bodies,” said Karczyński. The family probably died some days ago.
Police are ruling out involvement of a third party. "We will examine whether there has been a case of poisoning," said the spokesman. (pg)