William Morva, who was convicted for a 2006 double murder, died by lethal injection on Thursday night. His lawyers and the European Union said he suffered from severe mental illness.
Executions have been on hold in Florida since the Supreme Court deemed parts of the state's sentencing procedure unconstitutional in January 2016. Mark Asay is scheduled to be executed on Aug. 24.
Orlando's chief prosecutor said she wouldn't seek the death penalty, so the governor reassigned her murder cases. She sued to get them back. On Wednesday, the dispute went to the state's high court.
Justice Anthony Kennedy appears likely to cast the deciding vote in a Supreme Court case involving a death row inmate's right to help from a mental health expert who is independent of the prosecution.
Amnesty estimates China killed more people than all the other countries put together. The U.S. fell off the list of the top five countries to carry out the death penalty for the first time since 2006.
Nationwide, the number and pace of executions are down, but states are looking at alternative, previous methods after restrictions have increased making the drugs for lethal injection hard to obtain.
Gov. Rick Scott is reassigning 21 first-degree murder cases from State Attorney Aramis Ayala, who says seeking capital punishment is not in the best interest of justice.
The state hasn't carried out an execution in more than a decade, but its supply of the sedative midazolam expires at the end of April. So it plans to execute eight men over 11 days.