The Mexican army has arrested "El Mayito Gordo", aka Ismael Zambada-Imperial, son of Sinaloa co-leader Ismael Zambada-Garcia.
This is the third son of Zambada-Garcia to be arrested. Serafin Zambada-Ortiz, was arrested in Arizona in November 2013, and charged in San Diego. He recently pleaded guilty. Jesus Vicente Zambada-Niebla was charged and pleaded guilty in Chicago. Both are awaiting sentencing.
Zambada-Garcia's brother, Jesus Reynaldo Zambada Garcia, was arrested in 2008 and brought to the District of Colombia. He agreed to plead guilty in the Eastern District of New York where he was charged, and proceedings were transferred for his guilty plea. There's no record of his being sentenced. (Either under seal or hasn't happened yet.) His son was also arrested but later died while at a safe house in Mexico, presumably a suicide.
El Mayito Gordo's Twitter account, dormant since July, is here.