A Mankato man who pleaded guilty to assaulting a 4-year-old child was sentenced to 61 months in prison in Blue Earth County Court Friday. 39-year-old Miguel Angel Beltran will spend two-thirds of that sentence actually behind bars, followed by time on supervised release. He allegedly admitted to throwing his former girlfriend’s son to the ground and covering the boy with a mattress before apparently tossing a love seat on the child and jumping on top of it. Beltran says he lost his temper, and “felt bad” about what happened. He pleaded guilty to 2nd-degree assault, and charges of domestic assault and malicious punishment of a child were dismissed as part of a plea deal.