The phrase "a group caught" is correct and usable in written English.
It can be used in contexts where you are referring to a group of people or entities that have been captured or discovered in a particular situation.
Example: "The investigation revealed a group caught in the act of committing the crime."
Alternatives: "a team apprehended" or "a crowd discovered".
The men, whose names were not immediately released, were part of a group caught stripping a car on 12th Avenue about 8 a.m., the police said.
Abubakar Kaki, who trailed Rudisha closely for much of the race, is a member of the Messiria tribe of Western Sudan, a group caught up in the civil war.
Wiggins and twice runner-up Andy Schleck escaped that initial collision but they were among a group caught up in another accident nearer the finish.
Fignon attacked incessantly in the wet, treacherous final climb, but LeMond and a select group caught his rival and then LeMond made the perfect sprint to take the title.
He had risen through the ranks of Cobra Faction, an armed group caught up in fighting that predates South Sudan's current conflict, a cook and dishwasher become bodyguard.
A person or group caught up in a shame/anger spiral might be so out of control as to be oblivious to all else, whether morality or danger to self or others.
As the caretaker shined a light into the darkness behind, the group caught a glimpse of a man's head.
One group caught a stomach bug from Amy Brumfield, known to "Idol" fans as tent girl because she lives in a tent.
The new ownership group caught a break when the Canadiens surprisingly advanced deep into the playoffs months after the deal closed, boosting profits.
Tyson Hunt, the former president of the Soldiers of Odin Canada, told VICE that the leaders of the Canadian chapters asked for him to be removed after the group caught a wave of bad press.
It was pretty bizarre to see this group caught in a moment of nationalistic tribute to a country they'd never visited.
