Family members of Elizabeth Lafantaisie say they're relieved to see a jury find Thomas Brine guilty of first-degree murder in the Winnipeg grandmother's death.

The nine men and three women in the jury reached their verdict 2½ hours after deliberations began Wednesday afternoon.

Elizabeth Lafantaisie

The body of Elizabeth Lafantaisie, 73, was found in the trunk of her own car, which was located abandoned in an Osborne village neighbourhood in February 2011. (Family photo)

The body of Lafantaisie, 73, was found stuffed in the trunk of her own car after the vehicle was discovered in the Osborne Village area in February 2011. She had been sexually assaulted and strangled.

Brine, 29, had pleaded not guilty. He stood emotionless in court while his mother sobbed. Members of his family shouted, "Thomas, I love you" as he was escorted out of the courtroom.

Members of Lafantaisie's family, who had attended the entire trial, gasped and cried when the verdict was read aloud.

"Very tough day. We waited five years for this, and we're so happy that there has been justice for my mother," Lise Gosselin, one of Lafantaisie's daughters, later told reporters outside the courthouse.

"It won't bring her back, but at least we can end this and go on with our lives," said Anna Maynard, another daughter.

The family said they had expected jury deliberations to go longer than they did, but they are happy with the outcome.

"I think whoever has their moms today or their grandmothers, hug them, embrace them, be with them because you never know," Maynard said.

RAW: Elizabeth Lafantaisie's family reacts to Thomas Brine guilty verdict1:22

A sentencing hearing for Brine will be held Thursday at 11 a.m. A first-degree murder conviction carries an automatic sentence of life in prison with no eligibility of parole for 25 years.

Jurors heard the Crown's evidence during the trial, which began Feb. 8 in Winnipeg. The defence did not call any witnesses and Brine did not testify.

On Wednesday morning, Justice Joan McKelvey of the Manitoba Court of Queen's Bench instructed jurors about their duties and the general rules of law, as well as specific rules that apply to Brine's case. She also reviewed the evidence and facts in the case.

Court has heard that Lafantaisie was attacked in the underground parking garage of the Summerland apartment building on University Crescent. Her car was found near River Avenue and Lewis Street, in Osborne Village, six days after she disappeared.

Jurors watched a video recording of Winnipeg police investigators' interrogation of Brine shortly after he was arrested.

During the interrogation, Brine admitted he had stolen Lafantaisie's car, which he said was running with the keys in it outside an apartment building on Adamar Road near Pembina Highway.

However, he denied having any involvement in Lafantaisie's death. He told officers he found her body in the trunk after taking the car. He said he then drove the vehicle — while smoking crack — to Osborne Village, where he took it to a car wash before abandoning it.

Thomas Brine interrogation video

A video recording of Winnipeg police officers interrogating Thomas Brine was shown at his first-degree murder trial. (Winnipeg Police Service)

Defence lawyer Bruce Bonney raised questions Tuesday about a Winnipeg police officer's handling of the evidence and note-taking in the case, suggesting there may be problems with DNA samples collected from Lafantaisie's body.

A forensics officer testified there is a one-in-68-trillion chance that semen found in a swab from inside Lafantaisie's vagina could have come from anyone other than Brine.