An elementary school teacher in Washington state who was shot and killed while taking a shower on another man's property may have believed he was in a friend's home, a prosecutor said. 
 
 Nathanial Rosa, 31, was shot three times through a shower curtain in a Belfair home owned by Bruce Fanning early Saturday. The 59-year-old Fanning was arrested on suspicion of murder. 
 
 Rosa was out "drinking and celebrating" with friends the night before, Mason County prosecutor Michael Dorcy told the Daily News on Wednesday. A friend of theirs was being deployed, possibly to Afghanistan. 
 
 "The two properties are almost identical," Dorcy told The News. "They’re the same floor plan. The assumption is that he thought he was returning to his friend’s house and thought he was locked out. But he’s dead now so we can't confirm." 
 
 Homeower who killed showering intruder smiles in court appearance 
 
 Investigators are still trying to determine why Rosa went to the wrong house. Toxicology results are pending. 
 
 Nathaniel Rosa was fatally shot by Bruce Fanning early Saturday. (Facebook) 
 
 "He’d gotten a ride with friends," Dorcy said. "He didn't have his own transportation. So maybe when he got back to the house that he thought was his friend’s house and couldn’t get in, he may have thought he was locked out and then forced his way in before he took his clothes off." 
 
 Dorcy indicated it would not be surprising if it turned out Rosa was "under the influence," but added that the victim's clothing was "soaking wet." 
 
 "It’s my understanding the effects of hypothermia can also cause disorientation," the prosecutor said. 
 
 Wash. educator shot dead while showering on stranger's property 
 
 Fanning had said he believed Rosa was drunk when he fired on him, and told police he feared for his life. 
 
 Bruce Fanning appears in court earlier this week. (KIRO) 
 
 Fanning, 59, is the proprietor of Target Zone Sports, an online retailer that sells blowguns, crossbows, throwing stars, military knives and other weapons from the Belfair address linked to the alleged murder, according to state records. 
 
 The website includes testimonials thanking Fanning for his customer service and says the company has been in business 27 years. 
 
 Dorcy said the evidence supports a first-degree murder charge. 
 
 "The reality is, when you're acting in self-defense, you're allowed to act on appearances," he told The News. "But the force has to be reasonable and not more than necessary." 
 
 The prosecutor added that "it seems evident he made a decision and acted on that decision, which is premeditation." ||||| Nathaniel Rosa was a pareducator at Woodmoor Elementary School in Northshore School District. (Photo: Contributed photo / Rosa family) 
 
 SHELTON — Bruce F. Fanning, of Belfair, was charged Wednesday with first-degree murder in the shooting death early Saturday of Nathaniel J. Rosa, a 31-year-old paraeducator from Bothell. 
 
 Fanning, 59, had been arrested Saturday after he called Mason County 911 to report that he had shot and killed a man he found showering in Fanning's place of business. 
 
 Fanning posted a $250,000 bond and is out of jail, according to a report from KING-5 television. 
 
 Deputies found Rosa dead Saturday morning in the shower of the building on the 1500 block of East Trails Road. Fanning lives on the property in a separate structure and uses the building where Rosa was shot for his business. 
 
 Fanning told investigators that he found Rosa in the shower and told him to leave, but Fanning claimed Rosa “aggressively responded with non-understandable verbal threats.” Fanning said that he was afraid and that thought Rosa was drunk. 
 
 Fanning left the building and instead of calling 911 immediately, he returned with a .45-caliber pistol and shot Rosa three times through the shower curtain, he told investigators. 
 
 Mason County Prosecutor Michael Dorcy said Tuesday that Rosa had been at a nearby friend's house Friday night and took a walk early Saturday after getting into an argument. Rosa might have mistakenly entered Fanning's building, which has an identical floor plan to the house where he had been visiting his friend, according to Dorcy. 
 
 Bruce Fanning, of Belfair, has been booked for investigation of first-degree murder. (Photo: KING-5 TV) 
 
 In addition to determining if Rosa were intoxicated, Dorcy said, investigators will attempt to determine whether he was hypothermic, which might have contributed to a sense of disorientation. 
 
 Fanning’s properties are marked with signs on the windows that say “trespassers will be shot” and warnings that an attack dog is on the premises. 
 
 Fanning’s niece told KING-5 he is a “very private person.” 
 
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– The elementary school teacher who was fatally shot Saturday while showering in a stranger's home in Washington state may have believed he was in a friend's house, the New York Daily News reports. Prosecutor Michael Dorcy says Nathanial Rosa was staying at a friend's house nearby and had been out "drinking and celebrating." Dorcy says the house belonging to 59-year-old Bruce Fanning has the same floor plan as the house where Rosa was staying and the two homes "are almost identical." Dorcy says Rosa probably thought he was locked out of his friend's house, "but he's dead now so we can't confirm." Fanning was charged with murder on Wednesday, the News Tribune reports. The charge was upgraded from second-degree to first-degree murder based on allegations of premeditation. According to the Kitsap Sun, Fanning found Rosa in the shower and left the house, which he uses for his business, before returning with a gun and allegedly shooting Rosa multiple times. Authorities say it's unclear why Fanning, whose property is adorned with signs warning "trespassers will be shot," didn't call 911 until after shooting Rosa. Fanning says he was afraid for his safety. Investigators are attempting to determine if Rosa was drunk at the time or suffering from hypothermia—his clothes were soaked.