Crime 'I Did a Horrible Thing': Ore. Man Allegedly Killed Sister-in-Law During Fight Over Laundry Alexandra Arb-Bloodgood was fatally shot on Sunday morning By Chris Harris Chris Harris Twitter Chris Harris has been a senior true crime reporter for PEOPLE since late 2015. An award-winning journalist who has worked for Rolling Stone and MTV News, Chris enjoys prog rock, cycling, Marvel movies, IPAs, and roller coasters. People Editorial Guidelines Published on May 18, 2021 11:07AM EDT Share Tweet Pin Email Alexandra Arb-Bloodgood. Photo: Portland Police Bureau An Oregon man is accused of fatally shooting his sister-in-law during what an affidavit states was an "argument over laundry." According to a statement from Portland police, officers responded to reports of a shooting at a home in the city's Portsmouth neighborhood just after 8:30 a.m. on Sunday morning. Police arrived to find the dead body of Alexandra Arb-Bloodgood, 29. Arrested at the scene was 25-year-old Shane Finnell, her brother-in-law. The statement says Finnell remains in custody, and has been charged with second-degree murder and unlawful use of a weapon. According to an arrest affidavit obtained by PEOPLE, Finnell allegedly told police, "I did a horrible thing," moments after his arrest. Finnell's brother and the victim's husband, Jordan Arb, told investigators he and his brother had been arguing over laundry. According to the affidavit, Finnell threw a potted plant at Jordan Arb during the argument. Want to keep up with the latest crime coverage? Sign up for PEOPLE's free True Crime newsletter for breaking crime news, ongoing trial coverage and details of intriguing unsolved cases. Arb told police his wife was sitting on a chair on their back patio, facing away from Finnell. Arb alleged his brother walked over to his wife and "shot her in the back of the head at close range with a revolver," the affidavit alleges. Finnell has not yet entered pleas to the charges against him. Information on his attorney was unavailable. Arb could not be reached for comment Tuesday.