Philippine senators were sworn in as jurors on Tuesday in the impeachment trial of Vice President Sara Duterte, who faces a lifetime political ban if convicted of high crimes and betraying the public trust.

The deliberation process on whether to impeach the vice-president has been thrown back to the Lower House for consideration Philippine Vice-President Sara Duterte-Carpio has won round one of her impeachment battle after her allies in the Senate tossed back the bid to the Lower House on claims it was "defective" and "unconstitutional".