Officials are probing whether a teacher or staff member at a Fort Lauderdale high school knew a young woman had a gun before she fatally shot her classmate.

Broward Schools Superintendent James Notter confirmed the investigation into whether Teah Wimberly's possession of a weapon was known by someone at Dillard High and went unreported to authorities.

Wimberly is charged with first-degree murder in the Wednesday shooting of 15-year-old Amanda Collette. She's currently being held in jail and prosecutors are considering charging her as an adult.

Wimberly allegedly told police she was upset because the two had recently stopped talking and brought a gun to school because she "wanted her to feel pain like me," according to an affidavit.

"She's a very troubled young girl and we asked the judge to order a confidential psychological evaluation," said her attorney, Gary Kollin. Wimberly's family was "distraught about the fact that a child has died" and "saddened by the fact that Teah is in custody."

Officer Mark A. Shotwell, who interviewed Wimberly, wrote in the affidavit that she said the two had been friends, but recently stopped speaking. Investigators said Wimberly shot Collette, then walked to a seafood restaurant to call authorities and turn herself in. Prosecutors are considering charging her as an adult.