A strike led by fuel tanker drivers demanding better wages and work conditions has led to fuel shortages, forcing the Portuguese government to declare an energy crisis on Tuesday.

The government went on to assign police and army officers to drive fuel tankers to the southern touristic region of Algarve which was running out of fuel supplies.

Drivers on strike were seen writing banners that read "Thank you, military forces for doing our extra work," "Corruption is protected," and "Not one step back."

"To call off this strike it is necessary that the association representing the companies sector sits with us at the negotiating table with a review proposal for the salaries and for the availability of these workers relative to working hours" a drivers' union member said.

Another strike took place in April, in which the drivers won a wage hike, but drivers are now reportedly demanding further increases in 2021 and 2022.

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