A lawyer for Lindsay Clancy has asked a judge to investigate allegations that the lone juror who favored convicting her may have used a cellphone during jury deliberations and provided inaccurate information before or during the trial.

Clancy’s attorneys also asked the court to review the juror’s phone records and question him about his conduct, although he has not been accused of wrongdoing.

The judge declared a mistrial after the 12-member jury could not reach a unanimous verdict, with 11 jurors reportedly favoring clearing Clancy of criminal responsibility because they believed she was experiencing postpartum psychosis.

Another Clancy attorney asked the judge to dismiss the case rather than hold a new trial, arguing that the judge should have replaced the disputed juror with an alternate instead of declaring a mistrial, the AP has reported.

Clancy remains charged with murder and is being held in a psychiatric hospital while prosecutors decide whether to pursue another trial.