Florida ? Florida will train execution teams better and will require some members to be medical professionals in an attempt to avoid repeats of a botched December execution, according to documents made public Friday.

The changes are the second the state has made since it took 34 minutes – twice as long as normal – for a lethal injection to kill convicted murderer Angel Diaz, 55. An autopsy showed needles had been pushed through his veins into the flesh of his arms, reducing the effectiveness of the three chemicals used in executions.

The first round of changes included better training and communication, a clear chain of command as to who is in charge of each execution and additional staffing.