> His trial heard DNA on a cigarette butt discarded by Ali matched semen in the girl's body, which was found in Burnaby's Central Park in July 2017. > But the

> His trial heard DNA on a cigarette butt discarded by Ali matched semen in the girl's body, which was found in Burnaby's Central Park in July 2017. > But the jury was never told why B.C.'s Integrated Homicide Investigation Team was monitoring Ali,and an application by his lawyers for full information about the operation has been sealed by the court.