Sergio Rodolfo Cázares Zambada, aged 41, was the son of Águeda Zambada García, the older sister of 'El Mayo' Zambada, a prominent figure in the Sinaloa cartel. His mother passed away in 2021 due to a stroke. In 2012, Cázares Zambada was arrested in Baja California along with his cousin Omar Ismael Zambada while driving in a vehicle. Despite his close ties to the Sinaloa cartel, authorities have not confirmed that his death is connected to any conflicts between criminal factions.

Cázares Zambada's lifestyle was marked by opulence, which he frequently showcased on his Facebook account, featuring luxury cars and travels. His posts also included pictures with firearms and individuals, who appeared to be members of a criminal organization, emphasizing his connections to the underworld. His social media presence, however, ceased in 2014, indicating a possible shift in circumstances concerning his life and activities.

The confirmation of Cázares Zambada's death on February 10 raises questions about the current state of the Sinaloa cartel and its internal dynamics. The lack of information about the circumstances surrounding his death signifies an ongoing environment of secrecy and danger associated with cartel activities in the region. His demise could have implications for the factional structure of the cartel, and law enforcement's ability to navigate the complex web of relationships that define the Sinaloa cartel's operations.