From the latest post:
Conservative ministers and whips began spreading rumours about Christian Wakeford’s personal life minutes after the MP defected to Labour, it has been alleged amid growing concerns over dirty tactics in politics.

Would it be too much to ask that the 'it has been alleged' came at the start of the comment?

This smacks of comments on BBC where a tirade is given against someone, and, at the very end, they add thge word 'allegedly' to try and cover themselves.