A  Senior Louisiana State trooper Steven Vincent, 43, was dead after receiving two gunshots in his head by a gunman, at the side of the road in Bell City, Louisiana, on Monday. Vincent was supposed to help a possibly impaired driver who was also responsible for his death.

Reuters reported that Kevin Daigle, 54, was charged with first-degree murder and aggregated battery of a police.

In a press conference, State Police Colonel Michael Edmonson detailed the scene that was recorded on a dashboard camera of the police car. "It was frightening to watch," he said while pointing out that Vincent followed their protocols. "He did everything right."

According to Reuters report, the trooper was responding to a call regarding a reckless driver on Sunday when he confronted Diagle. The police believed that Daigle was an impaired driver who needed help. He was alone in his truck when Vincent approached him.

"I watched ... saw the door come straight open and he pulled out a shotgun - a sawed-off shotgun. I watched that shotgun blast. I saw my trooper go backwards," Edmonson recounted. Moreover, the video recording showed Diagle bowed over Vincent and was heard saying to the trooper: "You're lucky. You're going to die soon," as reported in Daily News.

In addition, Calcasieu Parish Sheriff Tony Mancuso said that Daigle could also be involved with a death of a person before his encounter with the trooper. The authorities are yet to release reports in his alleged involvement.  

Moreover in the press conference, Edmonson thanked the motorists who stopped to rescue Vincent with their heroic act of getting the gun out from Diagle. "They stopped to help my trooper and I will never forget that," Edmonson said. "I was pretty proud of them," he added.

Edmonson also said in his statement, "As an organization, we are heartbroken over this senseless and tragic death. Our thoughts and prayers are with his surviving wife Katherine and his son Ethan as well as his entire extended family."

Meanwhile in USA Today news, Governor Bobby Jindal ordered flags to be lowered to half-staff to honor the courage and service of trooper Steven Vincent.

According to Reuters, Vincent has left his wife and his 9-year-old son to his death. He was a veteran local enforcer when he joined the state of police in 2003. In the Daily News report, Vincent received a meritorious service award in 2012 with the arrest of an alleged bank robber.