According to the media outlet Haiti24, the suspect succumbed to COVID-19 on Wednesday in a Port-au-Prince hospital where he was taken after showing breathing difficulties while in custody.
Dragon's death was confirmed by Pierre Rene Francois, an official from the Penitentiary Administration, the outlet said.
Moise was shot dead at his residence on 7 July, while his wife sustained injuries and was subsequently hospitalised in the United States.
FILE PHOTO: Jovenel Moise addresses the media next to his wife Martine after winning the 2016 presidential election, in Port-au-Prince, Haiti. Picture taken November 28, 2016
© REUTERS / Jeanty Junior Agustin
The authorities have detained over 40 suspects in Moise's assassination, including 18 Colombian citizens and five US citizens, as well as four police officers. On Monday, the Turkish authorities detained a man named Samir Handal at the Istanbul Airport who was also suspected of being involved in the killing.