Kennewick, WA- A change of plea in the case of a West Richland teenager about to stand trial for murder.
Prosecutors and defense attorneys have reached a plea agreement .
Donald Schalchlin has been in juvenile detention since December of 2007 after the stabbing deaths of his mother and sister.
Another teenager, Josh Tucker, pleaded guilty and is now serving a life prison sentence.
Today in an Alford plea, Schalchlin pleaded guilty to first degree manslaughter and rendering criminal assistance.
Schalchlin wil be sentenced next month. For first degree manslaughter, Schalchlin could be sentenced to life in prison.
Prosecutors are recommending a sentence of nearly ten years.
Defense attorneys will ask for a seven-year sentence.