ALLENTOWN, Pa. -

Closing arguments began Friday afternoon in the murder trial for Jonathan Schaffer.

Schaffer is accused of stabbing girlfriend Lauren Wolstenholme to death in their South 18th Street apartment in September of 2012. Schaffer claimed it was self-defense and that Wolstenholme came at him with a knife.

It was not known Friday afternoon when the jury would begin their deliberations.

The trial begin Tuesday.