A judge has delayed until next month a hearing to determine who should pay for an expert witness for the defense of woman charged with crashing into a crowd at the Oklahoma State homecoming parade and killing four people.

The judge on Friday requested more information before ruling on whether the state should pay for a psychologist for Adacia Chambers.

The next hearing in the case is scheduled for June 1. Chambers has pleaded not guilty to four counts of second-degree murder and 42 counts of assault and battery in the Oct. 24 crash.

Prosecutors say Chambers intentionally drove around a police barricade and into the spectators. Defense attorney Tony Coleman says Chambers is mentally ill.

Chambers was found competent to stand trial in December.