A number of Conservative Party members have been suspended for posting or endorsing Islamophobic material online.
The BBC highlighted over 20 new cases to the party, who said all those found to be members who shared or supported anti-Muslim posts on Twitter and Facebook were suspended immediately.
However, the officials would not reveal the exact number of members suspended.
A Conservative spokesman said the party was now "establishing the terms" of an investigation into the wider issue.
But Baroness Warsi, the former Tory chairwoman who was the UK's first female Muslim cabinet minister, accused her party of "backsliding".
There have been repeated calls for the party to hold an independent inquiry into allegations of Islamophobia among members, due to previous incidents that have been highlighted to the party and in the media.