Fall River police say Michael Monahan put his kids, ages 3 and 6, in the trunk of his Pontiac Trans Am for several minutes Tuesday morning while he went inside a sailing shop.
According to court records, Monahan told investigators the boys like to play in the trunk.
The 35-year-old Monahan pleaded not guilty Wednesday to assault and reckless endangerment of a child. He was released on cash bail.
A broadcast from WPRI-TV showed Monahan's attorney telling a judge that his client loves his children.
The children are in the custody of their mother.
Information from: WPRI-TV