The phrase "and while the authorities" is correct and usable in written English.
It can be used to introduce a contrasting or simultaneous action involving authorities in a sentence.
Example: "The community was in turmoil, and while the authorities tried to maintain order, tensions continued to rise."
Alternatives: "and as the authorities" or "and although the authorities".
But he fled detention, and while the authorities tried to hunt him down he wrote a rambling letter to his wife.
And while the authorities have also occasionally raised the prospect of a more thorough investigation, they have ignored extensive evidence linking senior police officials to Mr. Magnitsky's death.
And while the authorities have said repeatedly since the investigation became public Sept. 14 that more arrests were likely to follow, they did not announce any Thursday.
And while the authorities have repeatedly denied ordering such actions, the former intelligence officials say they find many of the allegations credible.
And while the authorities do not question the validity of the marriage of Faisal Shahzad, the failed Times Square bomber, his arrest last month did renew questions about the process of scrutinizing spousal green-card petitions.
"Drug trafficking is a serious criminal offence and while the authorities need to do their utmost to combat the scourge of drug use in Iran, use of the death penalty is wrong and out of step with international standards.
And while the authority is expected to be officially created soon as a statutory body under a separate legislation, it has been in existence since February 2009.
And while the authority does plan to continue buying some natural gas buses, it is focusing its antipollution efforts on an experimental hybrid engine that runs on both diesel and electricity.
But one has to hope there is more of the sweetness and light while the authorities try to get to grips with the worst of the dark sub-culture.
According to local media, he called for "caution and calm" while the authorities investigated the incident.
Robert Davis, who chaired the Conservative borough's planning committee for 17 years, said on Wednesday night that he was giving up all of his roles as deputy leader and cabinet member for business, culture and heritage while the authority and an independent QC investigates his conduct.
