Lenoir City, TN - Loudon County grand jurors have spoken, clearing Lenoir City Police Department officer Tyrel Lorenz of four possible criminal charges stemming from the March 13 death of Joshua William Grubb, 30, of Clinton.The incident remains a puzzler, the prosecutor said: How a 6-foot, 8-inch tall patrolman ended up in the bed of a small pickup as it sped off from a U.S. Highway 321 convenience store, and why the officer quickly opted to shoot the driver nine times through the back window, killing him.Jurors in secret session Tuesday, after hearing a half-hour of testimony from Lorenz, visiting the shooting scene, viewing body camera footage and other videos, voted 13-0 on four occasions not to indict the officer, who was released from paid administrative leave and put back on the street.Thursday.Jurors considered indictments ranging from reckless homicide to voluntary manslaughter before deciding behind closed doors with no officials present not to indict."It is unusual that an officer would put himself in that situation," 9th Judicial District Attorney General Russell Johnson said during a news conference Thursday afternoon. "Were there other things he could have done? Yes. But I can definitely see how the grand jury arrived at their decisions."The grand jury, in an addendum to its report from the April 11-12 session, concluded that Lorenz, after ending up in the truck bed, fired the gunshots at Grubb in "an attempt to stop Grubb as Lorenz was in fear for his life and the safety of others on Highway 321."An autopsy showed Grubb was on a mix of alcohol and drugs, including methamphetamine, morphine and Valium. He was shot in the back, in the head, three times in either the right arm or shoulder, and once in the left shoulder and left forearm.Those gunshots were fired by Lorenz about four seconds after he either fell or leaped into the bed of Grubb's pickup and twice yelled for Grubb to stop the vehicle, according to the in-cruiser video.