MILWAUKEE, MI (CNN) -- A Marine veteran pleaded not guilty to first degree intentional homicide charges in the shooting death of his wife.
Ben Sebena, 30, served tours of duty in Iraq and Afghanistan.
He was married to a Wauwatosa, Wisconsin police officer Jennifer Sebena who was killed on duty Christmas morning.
Police say in the weeks leading up to her death she told a fellow police officer her husband was suffering from PTSD and having flashbacks.
According to court records, he suffered a traumatic brain injury while deployed.