The Israel Land Authority (ILA) was using offices situated above a huge - and potentially explosive - reserve of natural gas, Channel 2 reported on Sunday.
The reserve is kept underneath a maintenance building in Givat Ram in Jerusalem, a neighborhood containing a complex of government buildings and adjacent to the Knesset. It is used to supply energy to government buildings.
In the past, departments of the Culture Ministry and Finance Ministry were offered the building, but both proposals fell through when employees protested that they would not occupy the building due to the health hazard involved.
Employees of the ILA have been working in the building for several years. The Interior Ministry said on Sunday it had never approved the building for office use.