The phrase "authorities gathered" is correct and usable in written English.
It can be used when describing a situation where officials or governing bodies come together for a meeting or to discuss a particular issue.
Example: "After the incident, authorities gathered to assess the situation and formulate a response plan."
Alternatives: "officials convened" or "regulators assembled".
Next to the bulldozer is the slogan, "We are still watching," a warning to the new authorities gathered awkwardly around the new president, Vojislav Kostunica.
B5 The Biological Threat SEEKING A STRATEGY -- Public health and law enforcement authorities gathered at the White House to devise a strategy for responding to future strikes, which they say are almost certain to occur.
Soca, along with the Dutch prison authorities, gathered what it described today as "first class intelligence material indicating that Warren was still engaged in drug trafficking activity whilst in prison".
8 New Era in Yugoslavia The postrevolutionary billboards of Belgrade are mostly commercial again, except a new poster sponsored by the student movement showing a bulldozer and the slogan "We are still watching," a warning to the new authorities gathered awkwardly around the new president, Vojislav Kostunica.
After a day of recriminations over how the government handled information about anthrax attacks, public health and law enforcement authorities gathered at the White House tonight to devise a strategy for responding to future strikes, which they say are almost certain to occur.
Authorities gathered evidence in that case using torture, which is inadmissible in court under Mexican law.
German authorities gather intelligence and statistics on extremists and the crimes they commit.
Although the men have not been charged with any offence, the judge's order allows them to remain in jail while authorities gather more evidence.
At Sacred Heart, Linda T. Maloney, director of public safety, said the system had helped campus authorities gather evidence about sex crimes, trespassing and larcenies.
PARIS, Feb. 7 — Austrian authorities have gathered information on more than 2,360 individuals from 77 countries who tried to view child pornography through a Russian Web site stored on a Vienna computer, the country's Interior Ministry said Wednesday.
The experts also raised urgent questions about the way the Mexican authorities had gathered and handled evidence in the case, especially a bone fragment found in October 2014 that was linked to one of the missing students.
