Taichung police on Friday detained a 36-year-old man surnamed Ruan (阮) on suspicion of involvement in the disappearance of his grandmother and girlfriend. Prosecutors presume Ruan’s grandmother, who has been missing since 2015, is dead. Ruan was previously found guilty of forging documents to take possession of her house and land, and withdrew all the money from her bank account, they said. Citing new evidence, prosecutors on Tuesday obtained a search warrant to the house, in which Ruan lives and where they found teeth from his grandmother, they said. Investigators have long suspected Ruan’s alleged involvement in her disappearance and presumed killing, prosecutors said. Ruan