执法官员在发现Roley死在坎菲尔德山上后，认定他是持枪嫌疑犯，他的猎枪和手机就在附近。
官员们在周二晚上的更新中表示，美国联邦调查局在手机的技术处理和功能方面处于领先地位。官员们希望利用该设备的内容来收集任何潜在的动机。
两名消防队员在周日的袭击中丧生——弗兰克·哈伍德，42岁，库特奈县消防队长救援部门和约翰·莫里森，52岁，科德达伦消防队的大队长-和另一名消防队员，戴夫·泰斯达尔，科德达伦消防队，在应对灌木丛火灾时受伤，官员们认为，罗利故意在伏击前开始。
消息人士称，对Roley背景的部分调查集中在他在亚利桑那州的童年，在那里他与母亲和继父生活在一起。
知情人士补充说，当局已经与Roley的一些直系亲属进行了交谈，但不清楚他们说了什么。
爱达荷州警方公开表示，他们认为罗利是单独行动的，他们不认为对消防员的袭击与恐怖主义有任何联系。
在枪支周围长大
然而，熟悉调查的消息来源说，当局了解到，罗利在一个拥有枪支的家庭中长大，并对使用枪支感到舒适。消息来源称，Roley的继父合法拥有许多枪支。
美国广播公司新闻(ABC News)看到了罗利母亲和继父在脸书和Instagram账户上发布的照片，这些照片反映了他们对枪支的熟悉程度。
根据Everytown Research and Policy的数据，将近一半的亚利桑那州居民拥有枪支。
周二，在接受美国广播公司新闻采访时，罗利的一位前同学说，虽然所谓的狙击手总是“非常不同”，但他仍然“很难将我长大的那个韦斯与做了他所做的事情的韦斯联系起来。”
“我不知道他为什么这么做，这让我很震惊，”这位前同学迪特说，他不想公开自己的姓氏。“这是恶棍做的事情，简单明了。”
迪特形容韦斯·罗利是一个异常坦率的人，他会以尖锐的方式捍卫自己的观点。
高中里的极端观点
迪特声称，罗利是一个谈论纳粹主义的人，他“非常支持枪支”，他谈到想参军，他经常画炸弹和军用车辆，据称他曾因在教科书上画纳粹十字而惹上麻烦。
迪特尔说，罗利还会说与边境危机有关的“可怕的事情”。迪特说，他和他的朋友们会把所有的评论都当成“韦斯就是韦斯”，试图说些稀奇古怪的事情来显得“前卫”和突出。
迪特说，罗利从来不多谈他的家庭或他的背景，除了据说他经常声称自己出生在德国，比其他人更德国和“更爱国”。
根据迪特的说法，他和韦斯“从来没有亲密过”，但他们是同一个朋友小组的成员——从小学后期开始在凤凰城地区一起上学，一直持续到高中二年级，迪特搬到了科罗拉多。
然而，在他们高中的第一年，迪特声称，罗莉“在他所说的话中肯定变得更加精神错乱了”...和他认为是正确的。”
罗利家人的律师贾斯汀·p·惠滕顿(Justin P. Whittenton)周一代表家人发表了一份声明，称他们“打算全力配合当局寻求答案。”
“此时此刻，我们韦斯·罗利的家人谨向那些遇难者的家人以及整个科德达伦社区致以最诚挚的哀悼，”该家庭在声明中说。
“这一悲剧和受枪击事件影响的人遭受的巨大损失无法用语言来形容。我们不明白为什么会这样，也不知道这是如何发生的，”这位家人补充道。
Probe into Idaho firefighter ambush suspect digging into childhood, gun familiarity
As the investigation into thedeadly firefighter ambushin Idaho over the weekend continues, police are still trying to piece together why suspect Wess Roley allegedly instigated the attack, a source familiar told ABC News.
Law enforcement officials identified Roley as the suspected gunman after he was found dead on Canfield Mountain with a shotgun and his cell phone nearby.
The FBI is taking the lead in the technical processing of the phone and what it holds, officials said in an update Tuesday night. Officials hope to exploit the contents of the device to glean any potential insight into a possible motive.
Two firefighters were killed in the attack on Sunday -- Frank Harwood, 42, a battalion chief with the Kootenai County Fire& Rescue Department and John Morrison, 52, battalion chief of the Coeur d'Alene Fire Department -- and another firefighter, Dave Tysdal, of the Coeur d'Alene Fire Department, was injured while responding to the brush fire, which officials believe Roley purposely started before the ambush.
Part of the investigation into Roley's background is focusing on his childhood in Arizona, where he lived with his mother and stepfather, the sources said.
Authorities have spoken with some of Roley's immediate family, though it's unclear what they've said, the source added.
Police in Idaho have publicly stated that they believe Roley acted alone and that they don't believe the attack on firefighters had any connection to terrorism.
Growing up around firearms
The source familiar with the investigation, however, said that authorities learned Roley grew up with a family that had firearms and felt comfortable handling them. The source said Roley's stepfather lawfully possessed many firearms.
Photos posted to the Facebook and Instagram accounts of Roley's mother and stepfather, reviewed by ABC News, reflect that familiarity with firearms.
Nearly half of Arizona residents own firearms, according to Everytown Research and Policy.
In an interview with ABC News on Tuesday, a former classmate of Roley's said that while the alleged sniper was always "really different," he still has "a hard time trying to correlate the same Wess that I grew up with to the Wess that did what he did."
"I don't know why he did it, and it's -- it's shocking to me," said the former classmate Dieter, who didn't want his last name used publicly. "It's something that villains do, plain and simple."
Dieter described Wess Roley as someone who was unusually outspoken in the strident ways he would defend his views.
Extremist views in high school
Dieter claimed Roley was someone who talked about Nazism, who was "very pro-gun," who spoke of wanting to join the military, who would often make drawings of bombs and military vehicles and who allegedly got in trouble once for drawing swastikas in a textbook.
Roley would also say "awful things" related to the border crisis, Dieter said. Dieter said he and his friends would brush off all the comments as "Wess just being Wess," trying to say outlandish things to be "edgy" and stand out.
Dieter said Roley never spoke much about his family or his background, except he allegedly often claimed to have been born in Germany and to be more German and "more patriotic" than others.
According to Dieter, he and Wess were "never close," but they were part of the same friend group -- going to school together in the Phoenix area beginning in late elementary school and continuing until sophomore year of high school, when Dieter moved to Colorado.
During their freshman year of high school, however, Dieter claimed Roley "definitely was becoming more kind of unhinged in what he would say... and what he thought was right."
Roley's family's attorney, Justin P. Whittenton, shared a statement on behalf of the family on Monday, saying they "intend to fully cooperate with authorities in seeking answers."
"At this time, we, the family of Wess Roley would like to offer our most heartfelt condolences to the families of those whose lives were taken and to the community of Coeur d'Alene at large," the family said in the statement.
"There are no words that can suffice for this tragedy and the infinite losses suffered by those affected by this shooting. We do not understand why this happened or how this came about," the family added.
ABC News has reached out to Roley's mother and stepfather for further comment, but did not immediately hear back.
