Threatening text messages allegedly sent by a man accused of killing his wife took centre stage in a Saskatoon court room Monday.

The jury in the first-degree murder trial of David Woods, accused in the death of his wife, Dorothy Woods, watched a video interview between David and police about threatening text messages sent to a man in a relationship with Dorothy.

Dorothy Woods was last seen on Nov. 11, 2011, and her body was discovered in a culvert south of Saskatoon in January 2012.

Sgt. Bruce Gordon, a retired police detective, testified that he interviewed Woods six days after his wife disappeared.

Gordon said a man named Derrick Brown alleged that the accused had sent him threatening text messages from Dorothy Woods's phone.

An interview video played in court shows Woods telling Gordon that the only time he ever used his wife's phone was when he responded to texts that he found from a man named Wayne.

Woods says he had never heard of Brown until the day before the police interview. That's when one of his wife's friends told him that Dorothy had been romantically involved with Brown.

The texts Brown received from Dorothy's phone were sent on Nov. 15 and 16, 2011.

David Woods and his son were shown on security footage from Nov. 12, 201, at a Co-op store in Saskatoon in which David was carrying a roll of plastic poly sheeting and a hacksaw.

During cross examination, the defence lawyer Michael Nolin asked Gordon if the plastic sheeting could have been being used on renovations that weren't complete at the Woods' home. Gordon said he was told a different type of poly would be used.

- with Canadian Press files