The only power plant in the Hamas-run Gaza Strip was at a standstill on Tuesday due to an ongoing shortage of fuel caused largely by a dispute over taxes, officials said, according to AFP.

The plant has been closed since Saturday night when it ran out of fuel, said Ahmed Abu Al-Amreen, an official in the energy ministry.

Parts of the strip have been without power for 20 hours a day, the United Nations said, up from 12 hours previously.

The Palestinian Authority in Ramallah has gradually removed a tax exemption on fuel since January, demanding Hamas pay taxes on imports to Gaza.