Los Angeles (CNN) -- Prosecutors will seek the death penalty against a 41-year-old Southern California man charged Friday with murder in this week's mass shooting at a hair salon, Orange County District Attorney Tony Rackauckas said.





Scott Evans Dekraai of Huntington Beach, California, allegedly shot his ex-wife and seven other people to death at the Salon Meritage in the small coastal community of Seal Beach, Rackauckas said Friday. A ninth person was wounded.





Prosecutors formally filed eight counts of first-degree murder and a felony count of attempted murder against Dekraai on Friday. The first-degree murder charges carry the special circumstance of multiple murder, the prosecutor said.





Dekraai and his ex-wife, Michelle Fournier, 48, were in a custody battle over their 8-year-old son, and the dispute was the motive in the shooting, Rackauckas said. The prosecutor called Dekraai "a methodical and merciless killer."





On Friday afternoon, Dekraai appeared before Orange County Judge Erick L. Larsh, who, at the request of attorneys, rescheduled Dekraai's arraignment to November 29.





Dekraai is not taking his antipsychotic medication, and his attorney asked the court to make the drugs available to Dekraai while he is being held in jail without bail.





The judge said he would order a medical team to evaluate Dekraai and, in a response to another defense request, would see if Dekraai's current wife could deliver his spinal cord implant stimulator, which is needed because of a 2007 accident Dekraai experienced.





Balding and with a salt-and-pepper goatee, Dekraai appeared calm inside the courtroom's detainee cage. One person in the gallery shouted "You coward!" Then, as he exited the courtroom, a sobbing woman uttered "I hate you! I hate you!"





Dekraai's attorney, Robert Curtis of Long Beach, told the court that he's considering a change of venue.





Earlier Friday, authorities held a press conference and recounted how Dekraai's ex-wife, a hair stylist at the salon, was working near the entrance and was among the first two people shot.





On the morning of the shooting, which occurred Wednesday, Dekraai and Fournier got into an argument about child custody, authorities said.





"We're sort of guessing. We believe that the custody battle wasn't going well for him. We don't know the contents of their conversation or anything," Rackauckas said.





Hours later, the gunfire rampage at the salon, just blocks from the ocean, unfolded around 1:20 p.m., authorities said.





"He also considered the people who were friends and who worked with his ex-wife were enablers, and he didn't have much use for them either," Rackauckas said.





He was armed with three guns -- a 9 mm Springfield, a Smith & Wesson .44 Magnum, and a Heckler & Koch .45 -- and was wearing body armor during the shooting rampage, Rackauckas said. He used at least two of those guns, the prosecutor said.





Rackauckas summarized the mass shooting, saying Dekraai "walked through the salon shooting anyone close enough to hit. He stopped to reload during this spree, and he continued gunning people down. He was not satisfied with murdering his intended target, his ex-wife. For almost two minutes, Dekraai shot victim after victim, executing people by shooting them in the head and chest.





"He shot eight people inside the salon. But he was not done. He then walked out of the salon and shot a ninth victim, a male, who was sitting nearby in a parked Range Rover. The reason for this rampage: revenge," he said.





"We believe that the defendant committed this unimaginable act of violence because he wanted to kill his ex-wife over a custody dispute concerning their 8-year-old son. He was willing to end any life in his path, and he did. Clearly this two-minute murder spree could not have been about loving his son," the prosecutor said.





While Dekraai allegedly carried out the mass murder, his son was sitting alone in the principal's
What does Dekraai's attorney consider? Who was killed? How many first-degree murder charges were filed? How many first-degree murders were filed? What does Scott Dekraai's attorney say he is considering? What charges did prosecutors file? What is Scott Dekraai's attorney considering?
a change of venue. ex-wife and seven other people eight eight a change of venue. eight counts of first-degree murder and a felony count of attempted murder change of venue.
question: What does Dekraai's attorney consider?, answer: a change of venue. | question: Who was killed?, answer: ex-wife and seven other people | question: How many first-degree murder charges were filed?, answer: eight | question: How many first-degree murders were filed?, answer: eight | question: What does Scott Dekraai's attorney say he is considering?, answer: a change of venue. | question: What charges did prosecutors file?, answer: eight counts of first-degree murder and a felony count of attempted murder | question: What is Scott Dekraai's attorney considering?, answer: change of venue.