Dame Lowell Goddard has been asked to explain herself to MPs following her resignation from the troubled child abuse inquiry.
Home Affairs Select Committee chairman Keith Vaz said that Goddard's resignation is "extremely disappointing" and he has written to her to ask her to appear before MPs to explain her decision.
He told Sky News: "She is someone with impeccable credentials, so this is a big shock that she chooses to resign now.
"I think what's really important is that we find out the reasons why she has decided to take this course of action."
An overview of the 13 investigations to be carried out by Britain's beleaguered child abuse inquiry.
One abuse survivor told ITV News that he felt "let down" by yet another resignation.
Dame Lowell Goddard has left her role as head of the Independent Inquiry into Child Sexual Abuse. She was the third person to hold the role.