The Labour Party's Parliamentary Group is split over Prime Minister Joseph Muscat's future, but is almost in unanimous agreement that Keith Schembri and Konrad Mizzi should resign, The Malta Independent has learnt.

Muscat has been mulling the idea of stepping down and, according to reports in Times of Malta and MaltaToday, his resignation could come in a matter of months.

Both newspapers say the PM has indicated that he will resign once he sees a prosecution in the murder of Daphne Caruana Galizia, although the Times said the findings of the probe could force him to step down even sooner.

Sources told The Malta Independent that the Labour Parliamentary Group is split over the PM's exit. There is also anger that the group has not yet been convened after this week's developments. The group is now set to meet on Monday.

One source said there is "confusion" within the Parliamentary Group as MPs have had to rely on the media for updates. "Practically all MPs now feel that Konrad Mizzi and Keith Schembri should resign," the source said.

A similar situation exists among the Labour Party's delegates.

Meanwhile, another source pointed out that the Office of the Prime Minister has shed a considerable number of staff over the past few weeks and months, with most joining other government entities. This is also being interpreted as a sign that the PM will step down soon.

MaltaToday said there is a "sombre" mood at the Auberge de Castille, and Muscat is under pressure from ministers and party activists to remove Schembri and Mizzi.

The newspaper reports, however, that Muscat has told aides he will not be taking any decisions about the two "until the case is closed".