Police in Sapporo said Monday they have arrested a 24-year-old man on suspicion of fatally abusing his 4-year-old stepson at their apartment last week.
According to police, the suspect, Akira Miyakita, punched his stepson Kaito in the stomach at around 1:30 a.m. on Sept 17, Fuji TV reported. When Kaito's mother checked on him about 20 minutes later, she noticed he wasn't breathing and called 119.
Kaito was taken to hospital where he was pronounced dead at 3:30 a.m. due to internal hemorrhaging, police said.
The hospital notified police who arrested Miyakita on Sunday.
Police said Kaito's arms had bruises on them, leading them to believe he had been beaten on more than one occasion.
Miyakita was quoted by police as saying he was irritated and lost his temper.© Japan Today