The UAE Attorney General said several arrests were made after footage of a rape was shared on social media.
Hamad Saif Al Shamsi said video showed a group of "young men raping a girl", which was posted on various platforms.
"Urgent investigations were conducted to discover the details of the incident, the people who did it, when and where it happened," a statement on state news agency Wam read.
"Investigators were very quick to discover all factors, and an arrest warrant was issued to summon the accused."
He said arrests were made on Wednesday.
He did not specify the number of suspects, their nationalities or details regarding their background.
"They are currently being questioned and thoroughly investigated," he said.
No details of the suspected victim or her age were released.
Officials said details were made public because of "severity and gravity" of the crime, although they stressed that such incidents were rare.
