GREENSBURG (KDKA) – The penalty phase for one of the so-called members of the “Greensburg Six” began Monday morning in Westmoreland County.

Earlier this year, Melvin Knight, 22, pleaded guilty to first and second-degree murder in connection with the death of 30-year-old Jennifer Daugherty.

Prosecutors described her as “trusting” and “easily taken advantage of.” They said she was seeking companionship and friendship from Knight and the others accused of killing her.

Daugherty was killed inside a home on Pennsylvania Avenue in Greensburg back in 2010. She was forced to drink concoctions before ultimately being beaten and stabbed before left in a garbage can outside Greensburg Salem Middle School.

Defense attorneys plan to argue that Knight is gullible and easily manipulated and has a long history of ADHD, depression, bipolar disorder and psychotic disorder.

They said he should be held accountable, but held accountable with life in prison.

Westmoreland County District Attorney John Peck asked jurors to use their wisdom, courage and strength to ultimately condemn Knight to death.

A juror was apparently dismissed before opening statements began, but it’s unclear why.

Testimony could last up to 10 days.

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