Rochester N.Y.- It was a tense mood in the courtroom Wednesday as witness Nicole Stringer testified that Nguyen told her in 2010 she bought guns for convict William Spengler.

 Stringer was a friend of Nguyen's at the time and they played poker together.

The defense cross examination tried to show that Stringer made up the exchange because Nguyen had an affair with her former boyfriend. Nguyen is accused of supplying the guns that Spengler used in the West Webster ambush on Christmas Eve 2012.

Three people were killed and three were injured.