Miyagi Prefecture Police said they arrested a 31-year-old woman from Aoba Ward, Sendai, on Tuesday on suspicion of killing her 4-month-old daughter.

Police said Yumi Suzuki suffocated her daughter, Ayaka, at their home by covering her mouth and nose with a blanket.

Suzuki reportedly said she pressed down on her daughter on Tuesday morning because she wouldn't stop crying. She called the police by herself, and police found the baby unconscious, lying in the living room.

Her husband was away at the time, according to police.