Three men died in a violent brawl that involved 13 people, Dubai Police said.
Ten people were arrested following the incident, in which knives and bats were used.
The men were all described as Asian. Three people were injured.
The fight happened in the Naif district of Deira, but police would not say when.
Several people fled the scene before officers arrived but were traced within 24 hours.
“Police patrols and criminal investigations teams were dispatched to the area at once," said Brig Jamal Al Jallaf, head of criminal investigations.
“They found three dead bodies at the crime scene.
“Three men who sustained severe injuries as a result of being assaulted with sharp weapons were also found in the same area and were taken to hospital for treatment.”
“They were arrested and questioned and will be referred to Dubai prosecution to face charges, including those who were injured.”