Westport police arrested the Bridgeport man, and charged him with third-degree assault, risk of injury to child, third-degree assault on an elderly person and second-degree criminal trespass in the Sept. 2 incident, police said.
Officers arrived to talk with the victims after the man had left the premises in the wake of the assault, police said.
The child, whose age was not released by police, told police that the father knocked on the door with a belt in his hand. He then forced his way into the residence and began striking the child with the belt, police said.
The child ran upstairs, where the grandmother tried to intervene, police said.
She was injured when the son pushed her to the floor, police said.
Bridgeport Police accompanied Westport officers to the son's residence in Bridgeport, where he was arrested at 2 a.m. Wednesday morning and transported to Westport Police headquarters.
The man told police that he went to the residence to discuss his daughter’s behavior. He said he decided to discipline the child with his belt, police said.
He denied forcing his way into the house or assaulting the victim's grandmother, police said.
He was released on $1,500 bond. His court date was Sept. 2.
Police notified Connecticut Department of Children and Families of the incident.
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