An accused murderer embroiled in a complicated love triangle cannot be convicted because of a lack of evidence, a defence barrister says.Gofal Baziad, 54, has pleaded not guilty to the 2004 murder of Jason Palmer, the ex-husband of his on-again-off-again partner Remmy.Baziad left Australia for five years about a month after Palmer's body was found in the Nepean River with substantial torso wounds.READ MORE: Queensland MP Jimmy Sullivan found deadGofal Baziad is accused of murdering Jason Palmer, so he could