The phrase "authorities are further" is grammatically correct and can be used in written English.
It can be used when discussing the actions or decisions of authorities in a context that requires elaboration or additional information.
Example: "In response to the recent events, authorities are further investigating the matter to ensure public safety."
Alternatives: "authorities are additionally" or "authorities are also".
After the terrorist attacks on New York and Washington of 11 September 2001 - carried out mainly by Saudi nationals - the Saudi authorities were further torn between their natural instincts to step up internal security and pressure to allow a greater degree of democracy.
Faith in the authorities was further undermined by revelations that various CCTV video recordings made on the night of the disappearances -- which had been sent to the state investigators handling the case -- were destroyed.
After the establishment of other magistracies, especially the censorship and tribuneship, consular authority was further limited.
But Ong argues that the act of outsourcing violence triggers a vicious cycle in which the state's authority is further weakened.
When the U-boat campaign failed, the German government's authority was further undermined, while in the Habsburg empire nationalist separatism was inflamed by the rhetoric of Wilson's Fourteen Points.
Haniyeh's authority is further undermined by the fact that Mahmoud Abbas, the Palestinian President, dismissed him as Prime Minister of Gaza, in June, 2007, after the Hamas takeover, and appointed Salam Fayyad, a Fatah loyalist, in his place.
Mr Rajoy fears the loss of face, but the alternative is greater humiliation for less benefit later, when Spain is in deeper trouble and his own authority is further diminished.
Fazlullah's authority was further undermined by the fact that he is based in the relative safety of eastern Afghanistan at a time when Pakistan's army is engaged in a major operation to destroy the TTP's sanctuary in North Waziristan, which the army claims has killed 1,100 militants since it was launched on 15 June.
Naomi Klein, a columnist for the bitterly antiwar Nation, visited Baghdad at the same time as Barnes and found that the insurgency was mushrooming because the occupation authority was "further opening up Iraq's economy to foreign ownership" — in other words, because Iraqis shared her own anti-globalization views.
