Amy Bishop guilty plea

A former Alabama university professor who pleaded guilty in a deadly campus shooting is trying to appeal even though she waived that right earlier.

Court documents filed Monday show Amy Bishop has submitted notice that she intends to challenge the guilty verdict and her life sentence.

Bishop waived her right to appeal in a plea deal that resulted in prosecutors dropping a possible death penalty. So it's unclear whether any challenge can move forward.

The three lawyers who filed the notice on Bishop's behalf also told the judge they now want to leave the case.