The judge overseeing the Colorado theater shooting trial dismissed a potential juror who tore out her hair when told she would have to return for further questioning.

The incident occurred Tuesday outside the courtroom.

Judge Carlos A. Samour Jr. said the woman brought her grandchild to the courthouse because she couldn't find daycare for the unvaccinated child.

Samour said he was concerned about the health risks of having an unimmunized child in the courtroom.

Samour said the woman "lost it" when she was told she would have to return for further questioning. On Wednesday, Samour said other potential jurors found clumps of hair on the floor.

The jury that is selected will determine whether James Holmes was sane during the 2012 attack that killed 12 people and injured 70 others.