Brazil's imprisoned former president, Jair Bolsonaro, has undergone a second medical procedure in just three days to treat his persistent hiccups.

Doctors performed a "phrenic nerve block procedure" on Bolsonaro to block his left phrenic nerve, after treating Bolsonaro's right one on Saturday. The phrenic nerve can be found in the neck and is vital in controlling the diaphragm, which controls breathing.

The far-right former leader is currently serving a 27-year sentence after plotting a coup to overturn the 2022 election.

The latest treatments follow a recent surgery for the former president amid ongoing health complications.

Dr Claudio Birolini said that Bolsonaro's "condition is stable" following his second procedure for chronic hiccups on Monday.