Bernalillo County has released the mug shot of Nehemiah Griego, a 15-year-old suspected of killing his father, mother and three young siblings Saturday in their South Valley home.  It could have been even worse.  The New Mexico teen accused of gunning down his younger siblings, his mom and his pastor father reportedly planned on continuing his killing spree at a local Walmart.  RELATED: TEEN ACCUSED OF GUNNING DOWN 5 PEOPLE, INCLUDING 3 CHILDREN, INSIDE N.M. HOME  Nehemiah Griego, 15, had loaded up his family van with "several" guns that he intended to use to slaughter customers at the nearby shopping center, the Albuquerque Journal reported Monday.  Griego hoped to die in a shootout with cops, sources told the paper.  But he was talked out of the plan by a friend, who convinced him over the phone to meet him at his father’s church, the paper said.  He eventually told a church security guard about the crime, and the retired cop called 911, the report said.  The motive for the horrific slayings were still unclear, but the paper said the home-schooled teen had had a "minor disagreement" with his mom Sarah Griego Friday night.  He waited for her to fall asleep, and then is believed to have helped himself to his parents’ guns, including an AR-15 assault rifle and a .22 caliber pistol.  They’d been kept in a closet, and not in a safe, the report said.  At around 1 a.m., the gun-toting goon crept into his mom’s room and shot her, the report said.  The shooting woke up Griego's 9-year-old brother Zephania, who'd been in bed with the mom. Griego told the boy what he'd just done — and then shot him "multiple times," the report said.  The sounds of violence roused Griego's 2- and 5-year-old sisters, Angelina and Jael, who started screaming before their big brother killed them, too.  Griego then laid in wait for his father, pastor Greg Griego, and gunned him down when he walked in around 6 a.m., the report said.  The teen then called his unidentified friend and told him about his plan to continue the killing at Walmart, but the friend convinced him to go to his father’s old church, the Calvary Chapel, the paper said.  While there, he reportedly told a guard his family had been killed. The guard drove the teen to Griego’s house in South Valley, and called 911 when he saw the pastor’s dead body, the report said.  Sources told the paper the teen had long had murder/suicide fantasies.  Neighbors said they’d often seen Nehemiah walking around in Army fatigues. Local media said the home schooled teen wasn’t allowed to play video games, and that his family never let him watch violent shows on television.  Police are expected to hold a news conference about the case Tuesday morning.
The 15-year-old accused of fatally shooting his parents and three young siblings in their New Mexico home was described as a quiet kid who constantly wore camouflage gear, neighbors said.