ROME (Reuters) - Stellantis will extend the stoppage of car production at its Italian Mirafiori plant by a further two weeks, until Jan. 20, the head of the FIOM-Cgil trade union at the site said on Thursday.

FIOM's Gianni Mannori told Reuters that the decision - first reported by daily MF - had not yet been made official by the company. A spokesperson for Stellantis was not immediately available for comment.

Mirafiori, based in Fiat's hometown of Turin, has seen several production stoppages this year due to low demand for the electric Fiat 500 city car and the two Maserati sports models produced there.

Stellantis had announced at the end of last month that assembly lines would be paused for the whole of December and until Jan. 5, due to "continuing uncertainty in sales" for electric cars in Europe and luxury cars in China and the U.S.