( CNN ) -- One of two 12-year-old Wisconsin girls accused of stabbing a third girl repeatedly after reading online horror stories is not competent to stand trial , a doctor reported to the court handling the case . But the court-ordered report on Morgan Geyser 's competency -- mentioned in a hearing in Waukesha on Wednesday -- is n't the final word on the matter , as Judge Michael Bohren granted the prosecution a chance to challenge the finding in an August 1 hearing . Also Wednesday , Bohren granted the prosecution 's request for doctors to examine Geyser again , this time to determine whether she has a `` mental disease or defect '' that could have an impact on the case . Prosecutor Susan Opper requested the new examination , noting that the competency report does n't address whether Geyser is mentally ill. Further details about the report are n't publicly available , as the court has sealed it . Geyser and Annisa Weier are charged as adults with attempted first-degree intentional homicide , accused of stabbing a 12-year-old schoolmate in a Waukesha park 19 times and leaving her to crawl to her own rescue in late May . After being hospitalized for days , the victim is recuperating at home , her family has said . Both defendants were silent , handcuffed and wearing blue jail clothes , as they attended separate procedural hearings Wednesday morning . Neither defendant has entered a plea , as lawyers for both sides have tried to deal with Geyser 's competency and procedural matters ahead of an official preliminary hearing . Both are being held with bail set at $ 500,000 . Weier 's attorneys have n't asked the court to determine whether she is competent , but her lawyer Joseph Smith Jr. told Bohren on Wednesday that he reserved the right to do so . Weier 's defense team has said it will try to move her case to juvenile court , and Smith said Weier 's competency could come up as part of that attempt . Like Geyser , Weier is next due in court August 1 , when Weier 's attorneys are expected to tell Bohren how much more time they need to prepare for a plea hearing . Bohren ordered that the new report on Geyser 's mental health be completed before her August 1 hearing . Authorities said one of the girls held the victim down while another stabbed her 19 times on May 31 , allegedly so that the girls could impress a fictitious , ghoulish Internet character called Slenderman . The victim was taken to a hospital after a passing bicyclist found her , police said . The suspects were arrested hours after the victim was discovered , according to a criminal complaint . One of the girls encountered the name on a website known as Creepypasta Wiki , authorities said . One of the suspects allegedly told police that Slenderman is the site 's supposed leader , and to climb into his realm , a user must kill someone . Slenderman stabbing case : When can kids understand reality vs. fantasy ? Parents , take heed : 'Slenderman ' and more lurk online . Fund for the victim . CNN 's Shawn Nottingham contributed to this report .
Prosecutors to challenge decision , ask for further examination . Two 12-year-olds charged with attempted first-degree intentional homicide . Comment: Girl was stabbed 19 times at a park in Waukesha , Wisconsin , in May . Victim , 12 , is recuperating at home .