CLEARWATER, Fla — The man convicted of murdering his daughter by dropping her off a bridge is looking for a new trial.

John Jonchuck’s lawyers appeared in court Thursday to file a motion requesting a new trial based on recent changes to the law regarding expert testimony. Jonchuck's attorneys had already filed a motion requesting a new trial.

If the defense does not file the second motion by June 21, the original motion requesting a new trial is scheduled for discussion on Aug. 26.

Jonchuck was convicted of first-degree murder on April 16 in the killing of 5-year-old Phoebe, who he dropped off the Dick Misener Bridge in 2015.

The trial lasted nearly three weeks. Prosecutors got the murder conviction they were arguing for while Jonchuck's defense team argued he was insane. 

Related: Juror No. 3 says jury thought John Jonchuck was faking being crazy

Previous: Community remembers Phoebe Jonchuck after father convicted of murder

More: John Jonchuck requests new trial, claiming errors

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