The phrase "authorities demanded" is correct and usable in written English.
It can be used when referring to a situation where officials or governing bodies are requesting or insisting on something.
Example: "The authorities demanded immediate action to address the environmental crisis."
Alternatives: "officials requested" or "the government insisted".
But the UK authorities demanded that Laura's father accompany her on her return voyage.
The occupying Nazi authorities demanded that the statue of Jewish composer Felix Mendelssohn be pulled down.
There was nothing the authorities demanded that he couldn't locate: our original birth certificates, a hank of his grandmother's hair, the shoes I wore when I was twelve.
In recent days, Dr. Abdellah said the Kurdish authorities demanded three things of him: that he stay off Facebook, refrain from news media interviews and leave Erbil.
Vodafone paid £1.25bn to settle a long-running legal dispute with HMRC over the Mannesmann takeover, but denied reports that the tax authorities demanded £8bn.
The president determined to prepare relief expeditions to both forts, but, before the arrival of supplies, Confederate authorities demanded Fort Sumter's immediate evacuation.
Pierce says: "When she first wrote to local authorities demanding services, they were bewildered".
Spain's central government in Madrid has imposed harsh budgetary cuts on the country's 17 regional authorities, demanding that they rein in their spending.
Without parental support, they often struggle to secure good legal representation and to supply the clear, linear stories that authorities demand in immigration hearings.
The launch comes as Labour local authorities demand new powers from the government under the City Deal programme to tackle youth unemployment.
With the authorities demanding quick results, the police must have known that, by fair means or foul, they had to get their men.
