Here is a timeline of the investigation.
- July 7, 2011 — Richard Oland is found dead in his uptown Saint John, N.B., office.
- July 11, 2011 — Police say Richard Oland was the victim of a homicide and that it does not appear to be a random act.
- Aug. 16, 2012 — Court documents are released showing police believe Richard Oland was murdered.
- May 17, 2013 — More court documents are released showing that police suspect Dennis Oland murdered his father.
- Nov. 12, 2013 — Saint John police arrest Dennis Oland.
- Sept. 16, 2015 — Dennis Oland’s first murder trial begins. It lasts 37 days and involves 42 witnesses.
- Dec. 19, 2015 — Dennis Oland is found guilty of second-degree murder by a jury. He is automatically sentenced to life in prison.
- Oct. 24, 2016 — A New Brunswick appeals court overturns the conviction, ruling the judge did not properly instruct the jury. A new trial is ordered. Dennis Oland is released on bail the next day.
- July 2017 — The case is taken to the Supreme Court of Canada, which decides not to hear appeals.
- Oct. 15, 2018 — Dennis Oland pleads not guilty in his retrial.
- Nov. 20, 2018 — Justice Terrence Morrison declares a mistrial after issues are raised about the jury selection process. The jury is dismissed, and the trial proceeds with a judge alone.
- July 19 — Dennis Oland is found not guilty.
WATCH: ‘Find the real killers, then we can celebrate’ — Dennis Oland’s defence lawyer
—With files from the Canadian Press