Johannesburg - The case involving a businessman accused of murdering his wife in Oakdene in 2015 was on Wednesday postponed for further investigation at the South Gauteng High Court in Johannesburg.George Barkhuizen's wife, Odette, was gunned down in what police then believed was a hijacking, but Barkhuizen reportedly later became the prime suspect.The then 43-year-old mother was reportedly shot in the head and chest on June 11.State prosecutor, Riegal du Toit, asked Judge Ramarumo Monama if the matter could be postponed to May 8 for personal reasons.READ: Murder-accused husband asked insurer if they covered hijack deaths - StateMonama told Barkhuizen, that the matter could not proceed because one of the team members had experienced a personal tragedy on Tuesday night."We hope that the matter will be ready by Monday."He postponed the matter to May 8, 2017 at 11:30."The matter will be postponed for further investigation by the state."Barkhuizen remains on bail.During his bail application at the Johannesburg Magistrate's Court in September 2015, the court heard that Barkhuizen allegedly took out life insurance worth R7.5m weeks before his wife was gunned down.The court also heard that Barkhuizen allegedly sent the insurer an email asking if they would pay out if she died in a hijacking.At the time the court also heard that the couple's marriage was on the rocks.One of their sons had reportedly informed the police that his parents were sleeping in separate bedrooms and his mother had indicated that she wanted to file for a divorce.In an interview with the Star, one of the couple's sons claimed that Barkhuizen was abusive.