According to the Ministry of the Interior, any building more than 10 stories high should have automatic sprinkler systems and firewalls to contain the spread of a blaze.
Fire officials, however, speculate that power to water pumps may have been disrupted by the blaze, thus disabling the sprinkler system.
The Tuntex group constructed the buildings in 1996. Some 236 high-tech companies have set up shop inside the building.
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