In addition, two people are being treated in hospital for critical injuries, says Minister of the Interior Ivica Dacic.
The 35-metre-long concrete roof collapsed at 12 noon on Friday.
– This is a very complicated rescue operation, which will continue for many hours. Around 80 rescue workers from several cities are participating in the work, says Dacic.
Over the course of the evening, the rescuers used two large excavators to extricate two women who were trapped under the collapsed roof. Their condition was described as critical.
The cause of the accident is not yet known, but will be investigated, says Prime Minister Milos Vucevic. The massive concrete roof was built in 1964.
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