The phrase "authorities patrol" is correct and usable in written English.
It can be used to describe the action of law enforcement or governing bodies monitoring a specific area or situation.
Example: "The authorities patrol the streets regularly to ensure public safety."
Alternatives: "law enforcement monitors" or "officials oversee".
As a child, Dennis Goldstein watched the authorities patrol his neighborhood, which was home to Ethel Rosenberg's mother and, temporarily, the Rosenberg sons.
Ziegler was on the show to discuss recent events at the University of Southern California, where he was detained by whatever authorities patrol that institute of higher learning.
Should authorities patrol conservative neighborhoods in case they are inspired by the likes of Eric Rudolph or other violent anti-abortion extremists?
Donald Trump, no stranger to making disparaging comments about Muslims himself - including calling for a ban on them entering the country - said he would support Cruz's plan to have authorities patrol Muslim neighborhoods.
Do we really expect the authorities to patrol not only our borders but also our thoughts?
Leaked ideas include establishing offshore asylum centres in north Africa, and paying the Egyptian and Tunisian authorities to patrol their own maritime borders.
They ran out of the restaurant wearing brightly coloured clothes and ski masks and were set upon by about a dozen Cossacks, who are used by police authorities to patrol the streets.
The EU's border agency, Frontex, is working with Greek authorities to patrol the borders, and there is pressure on EU leaders to boost its powers.
Many of these young men leave from the city of Sfax, which is 275km (170 miles) down the coastline from Tunis it is further away from mainland Italy but closer to Lampedusa - and with less chance of detection by the Tunisian or Italian authorities who patrol the waters.
In the wake of the deadly terror attacks in Brussels on Tuesday morning, Republican presidential candidate Sen. Ted Cruz (R-Texas) called on authorities to "patrol and secure" Muslim neighborhoods in the United States.
No librarians or other authority figures patrol the bookshelves in any of these buildings.
