Berlin, Feb 26, IRNA -- Polish prison conditions ranked worst in Europe, according to a study released Thursday by the German University of Greifswald.
Overcrowded prison cells, chronic underfunding, lack of work for prisoners and dismal sanitary conditions highlight the main problems of Poland's prison system, said German criminologist Frieder Duenkel.
Poland has been the scene of repeated prison riots in recent times.
There are some 58,000 convicted people who are still waiting for a free place in jails to begin serving their time, according to Polish media reports.
The survey which compared the prison situation of nine European countries, stressed there was no evidence of massive human rights violations in European countries.