P.R. Laws Ap. tit. 34A, § II, Rule 191
2019-02-21 00:00:00+00
When a new trial is granted, it shall be held for an offense which is not a greater offense and which is not greater in degree than the one for which the defendant was convicted in the former trial. In the new trial, the former verdict or finding cannot be used or referred to either in evidence or in argument, nor can it be pleaded as ground for the dismissal of the information under subsection (e) of Rule 64.