Ronald Wasser's defence lawyer will not be calling any witnesses or presenting any evidence at the attempted murder trial.

Scott Fowler made the announcement to the judge and jury in the Moncton Court of Queen's Bench on Monday.

Norma Wasser, the estranged wife of Ronald Wasser, and her two sons

The estranged wife of Ronald Wasser, Norma Wasser, and their two sons, leaving the Moncton courthouse last week. (CBC)

​Wasser, 48, of Riverview, is accused of trying to kill his estranged wife with a 12-gauge shotgun on May 29, 2013 — the day after what would have been the couple's 25th wedding anniversary.

Norma Wasser, 49, was shot in the left arm in her basement bedroom of their Kerry Court home. The shot broke her left arm in two places and broke an artery, she testified earlier in the trial.

The couple was in the midst of divorce proceedings at the time, and Ronald Wasser had been ordered by the courts to move out of the house by the day of the shooting, the courtroom heard.

He is also charged with discharging a firearm at Norma Wasser with the intent to wound or endanger her life, assault with a weapon, assault causing bodily harm, aggravated assault, and possession of a weapon for a dangerous purpose.

The Crown and defence will present their closing arguments on Tuesday.

Justice Jean-Paul Ouellette told the jury the onus is on the Crown to prove its case beyond a reasonable doubt.

He will instruct the jury on Wednesday and then the six men and six women will begin deliberations.

The Crown concluded its case on Friday, after calling 20 witnesses and submitting 23 exhibits.