FEARS are growing that up to 40 Labour parliamentary selections may have been rigged through the abuse of a controversial online voting system.

Two sitting MPs are threatening legal action after Anonyvoter — a system designed by Labour associates of the party’s general secretary David Evans — was used in their deselections, with police investigating alleged abuses in a third constituency.

More than 2,500 Labour members have backed a petition run by campaign group Momentum demanding an independent investigation into the system.