The man and the woman were caught on camera by a building surveillance camera in the So Paulo city of Várzea Paulista when they were suddenly approached by the suspect on a motorcycle outside a property.
The assailant briefly conversed with the couple before reaching for a revolver hidden under his jacket.
As his teammate jumped in to assist him in disarming the robber, the man instantly rushed towards him and reached for the revolver.
The man then pistol-whipped the offender while the woman seized the helmet and struck his head, causing the couple to knock the offender to the ground.
In an effort to stop the pounding, the thug was seen raising his arms.
But the bashing went on as the duo dragged him across the street, hitting him alternately.
Before the police arrived and took him into custody, they kept him shackled.
He was taken to a nearby hospital for treatment of his wounds and was scheduled to be moved to a nearby jail as soon as he had a clean bill of health.
The suspect’s motorcycle had recently been reported stolen in the neighbouring state of Campinas.
President Nayib Bukele of El Salvador, whose administration has stepped up efforts to battle street gangs, praised the pair for their bravery.
“The power of love,” he tweeted along with an emoji of a heart.
Watch the video here: