A 42-year-old woman was taken into custody by prosecutors Monday on suspicion of murdering her 7-year-old son in 2019 by suffocating him.
The move comes as police also look into the deaths of her three other children at an earlier date, all of whom also passed away at a young age.
Ayano Ueda, who describes herself as a nursing assistant, was arrested by police Sunday for allegedly suffocating her son Yudai by blocking his nose and mouth sometime between 8:45 a.m. and 3 p.m. at their home in Yamato, Kanagawa Prefecture, on Aug. 6, 2019.