The phrase "authorities regarding" is correct and usable in written English.
It can be used when referring to officials or organizations that have the power to make decisions or provide guidance on a specific matter.
Example: "We need to consult the authorities regarding the new regulations that have been proposed."
Alternatives: "officials about" or "regulators concerning".
"British embassy staff will continue working with local authorities regarding any further British nationals that may require our assistance".
Apple said the requests came from federal, state and local authorities regarding both national security matters and criminal investigations.
It confirmed that Gibson handed over the new finds on Monday and the agency was "seeking advice from Malaysian authorities regarding how they would like to proceed".
"There is an increasing level of concern among international, national and state authorities regarding the composition of e-cigarettes, and the likely effects of their use.
Robert A. Wood, a State Department spokesman, said Sunday, "The Swiss ambassador continues to work on obtaining information from Iranian authorities regarding the three Americans".
You write that "the Swiss government has been dragging its feet" in the negotiations with United States authorities regarding the exchange of bank information.
"We of course will offer our consular protection, and we are in direct contact with the Cambodian authorities regarding the ins and outs of this arrest," he said.
"However, as a family we still feel that we have been severely let down by the authorities regarding the help we were trying to access leading up to the deaths of my parents.
The CQC's report comes in the wake of silence from NHS England, the government and local authorities regarding how they plan to drive change in light of the recommendations of the Bubb report that was published last month.
He had regularly petitioned local authorities regarding problems in his neighbourhood and discussed on his Facebook page issues related to the situation of Crimean Tatars and the future of Crimea, a relative told Human Rights Watch.
Zen Energy is also trying to get in on the action in Western Australia, where company chairman and former federal government climate advisor Ross Garnaut has, according to Turner, been in discussions with state authorities regarding distributed power systems.
