The six men accused of killing eight men connected to the Bandidos biker gang have all entered not guilty pleas in a London, Ont., courtroom.

The murder trial began today after the last juror was chosen following five weeks of jury selection.

The trial is expected to last six months.

The jury will decide if the men are responsible for the deaths of the eight men, who were found stuffed into four vehicles on a road outside the southwestern Ontario community of Shedden in April 2006.

All eight had been shot in the head.

The six accused are each charged with eight counts of first-degree murder.