Randy O'Hagan will not take the stand to tell his side of the story about what happened the morning Lorry Santos was fatally shot.

The Saskatoon mother of four was gunned down in her home early in the morning of September 12, 2012.

O'Hagan is charged with first-degree murder in her death.

White Boy Posse

The Crown wrapped up its case this morning by calling a firearms expert as its final witness.

Defense lawyer Ian Wagner opted not to call any evidence. This means O'Hagan will not take the stand to testify, or face cross-examination by prosecutor Matthew Miazga.

Throughout the trial, which started April 14 at Court of Queen's Bench, various witnesses tied O'Hagan to the Alberta-based White Boy Posse street gang.

Justice Ron Mills heard how the gang had started making inroads selling cocaine in Saskatoon. It was a drug dispute that led to the death of Lorry Santos, court heard.

Witnesses said that the gang had wanted to kill a man who had left the group. Instead, it's alleged that O'Hagan went to the wrong house and shot Santos by mistake.

O'Hagan is being tried by judge alone.