A jury has found a former pastor guilty of manslaughter in the 2011 death of his pregnant wife.

Anna Karissa Grandine, 29, was found drowned in the bathtub of her Scarborough home on Oct. 17, 2011. An autopsy found traces of the sedative Lorazepam A, commonly known as Ativan, in her blood. She was five months pregnant at the time.

On Thursday, a jury found her husband, former pastor Philip Grandine, guilty of manslaughter.

Grandine is in police custody and his sentencing will occur on December 11 at 10 a.m.

Anna Karissa's sister spoke to the media outside the court after the ruling was announced.

"(Anna) Karissa was truly a kind and generous person," said her sister Hannah Darvin, with her mother standing next to her. "She has been and will continue to be sorely missed. We know that God is in control of the situation, and we are ever grateful for everyone's thoughts and prayers."

Grandine's lawyer said that Grandine and his family are "absorbing" the events of the day.

"It is clear that the jury has found that he had no intention to kill his wife, and for that I'm grateful," he added.

Grandine was originally facing a first-degree murder charge.

During the trial, Crown alleged that Grandine plotted to kill his wife so he could continue an extramarital affair with one of his parishioners at Ennerdale Baptist Church.

Police responded to a 911 call made from Grandine's home on Marsh Road, near Danforth Road and St. Clair East on the night of his wife's death. The ex-pastor told the 911 operator he returned home and found his wife under the water in the bathtub and not breathing.

"I just came home," he told the 911 dispatcher. "I was out running and my wife was taking a bath, and when I came home she was in the bath, but she's under the water and she's not breathing."

The Crown alleged the call placed by Grandine was faked, and he had no intention of saving his wife. The victim was taken to hospital, but was pronounced dead upon arrival.

The ex-pastor also worked as a nurse, and the Crown suggested he may have had access to the sedative Ativan, which they say was used to drug the victim.

Police said that computer records showed that a week earlier Grandine's Wiki.answers.com account was used on the forum to ask whether a 100mg dose of Ativan would be fatal. The account also conducted searches on the same subject.

The couple's doctor told the court that Grandine's wife was never prescribed Ativan. Grandine also admitted to him that he was unhappy in his marriage.

"He was not sure if his wife would have been his first choice if he had to do it all over again," Dr. Irving Gore told the court.

The court was told that Grandine was forced to resign from his position at the Ennerdale Baptist Church after his wife and other parishioners found out about his affair with Eileen Florentino.

Florentino said the two had sex in his car a few days after his wife died. She said the relationship lasted another six months.

The defence argued Grandine's wife killed herself because of the affair.

Investigators also said on the night of his wife's death a filter that limits and monitors visits to pornographic sites on Grandine's computer was removed after 10:05 p.m. Grandine had told police he had gone for a jog at 9:45, and returned home an hour later to find his wife in the bathtub.

Police also pointed to computer records that showed Internet searches for "body rubs dream spa: a new spa massage," "let Thai campanion give u the ultimate experience," and "TO sluts: Toronto escorts review" days before the murder.

They also reported that they discovered an Internet search for female escorts was done on the night of Grandine's wife's death.