NASHUA, N.H. -- A teenager who was in the room during a deadly New Hampshire home invasion has testified that one of his co-defendants had two hands on a machete as he repeatedly brought it down on a terrified mother and daughter.

Billy Marks, who has struck a plea deal, testified Tuesday in Steven Spader's murder trial. Marks agreed to a 30-60 year sentence for his role in the attacks that killed Kimberly Cates and nearly killed her daughter in their Mont Vernon home in October 2009.

Marks says the mother and daughter awoke and pleaded with them to stop.

Spader stared expressionless as Marks described how Spader went over to 11-year-old Jaimie Cates as she lay bloody on the floor and whacked her in the head with the machete and kicked her in the chest.

Eighteen-year-old Spader has pleaded not guilty first-degree murder and other charges.