The phrase "authorities requesting" is correct and usable in written English.
It can be used when referring to a situation where officials or governing bodies are asking for something, typically in a formal context.
Example: "The authorities requesting additional information must be provided with the necessary documents by the end of the week."
Alternatives: "officials asking" or "regulatory bodies seeking".
His brother, Lal, the chairman of the newspaper, said he wrote to the local authorities requesting protection.
The standoff has continued since 2009, when the government first refused court orders to write to the Swiss authorities requesting that they restart the investigation.
He was part of a group of scholars who submitted a petition to the Chongqing authorities requesting the safeguarding of the cemetery as a "cultural preservation site".
The police also found a letter sent by Mr. Nasser to Dominican immigration authorities requesting approval for two Dominican women to travel to El Salvador for company training.
His dismissal stems from longstanding court demands that he write a letter to Swiss authorities requesting that they reopen a dormant corruption investigation into Mr. Zardari's finances in that country dating to the 1990s.
From his desk he pulled a stack of letters sent over the years to authorities, requesting money to mend the school's fence, hire a janitor, and buy supplies like chalk and mimeograph ink.
American authorities requested Mr. Vazquez's extradition.
American officials said they would consider transferring only those prisoners the Afghan authorities requested.
Shortly after Long completed this exercise, the college authorities requested a meeting with his parents.
In another case, the Polish authorities requested the extradition of a suspect for theft of a dessert.
Last week French authorities requested interviews with executives from about 20 gaming firms to discuss the legality of their operations.
