A factory being built in central Turkey collapsed Friday, killing four workers and injuring another, the Anatolia news agency reported. Rescuers pulled out five workers trapped under the rubble following the collapse of the building site in the central Anatolian city of Eskisehir, but only one survived, Anatolia said. The worker was being treated at a local hospital. There was no word on his condition. Authorities suspect a problem with a crane and other construction mistakes likely contributed to the collapse, Anatolia reported.