Guillermo Martinez was 78 and died in Miami, Florida, on May 5, 2018. A Cuban-born journalist well known in South Florida for his work in both English and Spanish media, Martinez had been reported to have been battling cancer and his death was initially attributed to natural causes.

Subsequent inquiries uncovered inconsistencies in medical reports and in statements from close associates, prompting the Miami Police Department to open a criminal investigation. Investigators identified multiple people with professional and personal ties to Martinez, and threatening messages and emails directed at him were discovered during the probe.

A former business partner emerged as a person of interest after being arrested on financial charges; prosecutors later pursued allegations connecting that individual to Martinez’s death while the defense maintained the death resulted from existing health problems. The jury returned a guilty verdict and the defendant received life imprisonment.

Did anyone who knew Martinez or his work in Miami notice threats against him or have information about his relationships with colleagues and business partners?