当局表示，周一正在调查一名宾夕法尼亚州骑警被枪杀的动机，这名骑警周日晚上在一个交通站被一名所谓的古怪司机枪杀，这名司机在现场自杀身亡。
当局确认这名骑警是小蒂莫西·奥康纳下士，他在宾夕法尼亚州警察局工作了15年。
“我非常悲痛地宣布，今晚宾夕法尼亚州警察家庭失去了一个儿子，失去了一位英雄，失去了一位敬业的公务员，”宾夕法尼亚州州长乔希·夏皮罗在周日晚上的新闻发布会上说。
州长说，40岁的奥康纳，一个年轻女儿的已婚父亲，被杀害“做他奉献一生的事情，那就是服务他人，保持我们社区的安全，照顾他的宾夕法尼亚同胞。”
宾夕法尼亚州警方中校乔治·比文斯在周日晚上的新闻发布会上说，奥康纳是在切斯特县西卡尔恩镇附近的一个交通站被枪杀的。
比文斯说，奥康纳是在晚上8点16分左右接到切斯特县蜂蜜溪附近的电话后被枪杀的。比文斯说，奥康纳在晚上8点24分左右在西卡尔恩镇10号公路附近找到并拦下了这辆车。
“他发出无线电信号，表示他正在停车，这是我们最后一次听到奥康纳下士的声音，”比文斯说。
比文斯说，一名巡逻警察被派去检查奥康纳的健康状况，“发现情况非常糟糕。”
比文斯说，初步调查发现，就在司机靠边停车的“几秒钟之内”，奥康纳遭到致命枪击。
州警察周一下午确认了枪手嫌疑人的身份，他是来自切斯特县Honey Brook的32岁的杰西·内森·埃尔克斯。
“司机从车内开枪，当他(奥康纳)接近驾驶座时击中了他，”比文斯说。"奥康纳下士在现场立即因受致命伤而倒下。"
比文斯说，在涉嫌枪击奥康纳后，嫌疑人走出汽车，走了一小段距离，用半自动手枪自杀。比文斯说，他当场被宣布死亡。
州警察局和该县的侦探正在与切斯特县地方检察官办公室对枪击事件进行联合调查。
“在接下来的几天里，我们将调查他的背景和动机，”切斯特县地方检察官克里斯托弗·德·巴雷纳-萨罗贝周日表示。
夏皮罗说，周日晚上，他和奥康纳的妻子凯西以及父母在保利医院。
“我为蒂姆和凯西的小女儿以及他们的整个家庭感到心碎，”夏皮罗在一份声明中说。
State trooper who was fatally shot died 'doing what he dedicated his life to': Governor
A motive was under investigation on Monday into the fatal shooting of a Pennsylvania state trooper who was gunned down during a traffic stop Sunday night by an alleged erratic driver who died at the scene by suicide, authorities said.
The trooper was identified by authorities as Cpl. Timothy O'Connor Jr., a 15-year-veteran of the Pennsylvania State Police.
"I am profoundly saddened to announce that tonight the Pennsylvania State Police family lost a son, lost a hero and lost a dedicated public servant," Pennsylvania Gov. Josh Shapiro said at a Sunday night news conference.
The governor said the 40-year-old O'Connor, a married father of a young daughter, was killed "doing what he dedicated his life to and that is serving others, keeping our community safe, looking out for his fellow Pennsylvanians."
O’Connor was shot during a traffic stop near West Caln Township in Chester County, Lt. Col. George Bivins of the Pennsylvania Police said at a news conference Sunday night.
Bivins said O'Connor was shot after he responded to a call around 8:16 p.m. near Honey Brook in Chester County. O'Connor located and stopped the vehicle around 8:24 p.m. near Route 10 in West Caln Township, Bivins said.
"He made a radio transmission indicating he was stopping the vehicle and that is the last we heard from Cpl. O'Connor," Bivins said.
Bivins said a patrol officer was sent to check on O'Connor's well-being "and found a very bad situation."
A preliminary investigation found that "within seconds" of pulling the driver over, O'Connor was fatally shot, Bivins said.
The State Police identified the alleged gunman Monday afternoon as 32-year-old Jesse Nathan Elks of Honey Brook, Chester County.
"The driver opened fire from inside the vehicle, struck him just as he [O'Connor] approached the driver's side of the vehicle," Bivins said. "Cpl. O'Connor went down with a fatal wound immediately at the scene."
Bivins said that after allegedly shooting O'Connor, the suspect got out of his car, walked a short distance and shot himself with a semiautomatic pistol. He was pronounced dead at the scene, Bivins said.
Detectives from the state police and the county are conducting a joint investigation into the shooting with the Chester County District Attorney’s Office.
"In the coming days, we are going to be looking into his background and his motives," Chester County District Attorney Christopher de Barrena-Sarobe said Sunday.
Shapiro said he was at Paoli Hospital on Sunday night with O'Connor’s wife, Casey, and his parents.
"My heart breaks for Tim and Casey’s young daughter and their entire family," Shapiro said in a statement.
