SYCAMORE – The trial has been delayed again for William “Billy” Curl, who is accused of killing Northern Illinois University freshman Antinette “Toni” Keller in October 2010.

Judge Robbin Stuckert granted prosecutors’ request Monday to continue Curl’s trial until April 11 so prosecutors could hire and prepare an expert in forensic psychology. The trial had been scheduled to start Dec. 3, then had been rescheduled to Jan. 14 so Curl could be fitted for hearing aids.

Curl, 36, of DeKalb, is accused of murder, concealing a homicidal death, arson and criminal sexual assault in connection with Keller’s death.