Daniel Anderson, the man charged with the attempted murder of two Winnipeg police officers during a drug raid at his home two years ago, has pleaded not guilty.

On Dec. 7, 2006 officers were executing a search warrant for drugs inside his home on Jubilee Avenue.

During the raid, two officers were shot by someone on the other side of the bathroom door.

A third police officer was also shot from another officer's ricochet bullet.

During the first day of his trial a supervising street crime officer recalled what happened that night.

He described hearing gunfire shortly after entering the home.

He testified that Anderson's mother began yelling "Danny, Danny, no. What are you doing? Stop, Danny. You shot a cop."

Anderson left the first day of his trial Monday with his father by his side. The man is also charged with dangerous use of a weapon.

It's expected that during the two-week trial, lawyers will argue whether or not Anderson actually knew that police officers were entering his home that night.

One officer has already testified that police identified themselves by yelling repeatedly.

Anderson's lawyer is arguing his client didn't know it was police because of how quickly everything happened, his screaming mother, and poor lighting.