A 25-year-old woman who was arrested last week for the alleged 2018 murder of her older, wealthy husband in western Japan is suspected of having planned to sell at least one of the expensive paintings he owned, investigative sources said Thursday.

Saki Sudo asked an art dealer to evaluate the painting owned by Kosuke Nozaki, 77, president of a liquor sales company and real estate business in Wakayama Prefecture who had amassed property worth around ¥1.3 billion ($11 million), the sources said.

Nozaki published an autobiography in 2016 in which he likened himself to the mythical Spanish playboy Don Juan, claiming to have given ¥3 billion to 4,000 "beautiful women."