Cops in Rio de Janeiro swarmed a City of God slum during an anti-drug operation early on Saturday (10Dec16) and killed two men, including Barraco's 19-year-old boy Yuri Lourenco da Silva.

Authorities confirmed the incident, claiming there was a confrontation between officials and two criminals, who were shot as they retrieved a stash of cocaine and marijuana.

Barraco, 36, was in the middle of a concert when she received the tragic news, and she later took to social media to attack officials for her son's death, insisting they had "taken away a piece of me that will never be replaced".

She added, "This pain will never heal."

She made no mention of her son's alleged involvement in drug trafficking.

Homicide officials have since launched an investigation into the case.