Police arrested a Bronx man in connection with the death of his 1-month-old son on Monday, authorities said.

Christian Rodriguez, 24, was hit with charges including causing injury through risk of death, reckless assault child-brain injury, assault on a person under 11 years old and assault on a person under 7 years old, police said.

Rodriguez’s new-born son, Aiden, was rushed to Lincoln Hospital after someone called 911 to report he was injured at the Mill Brook Houses on East 137th Street, authorities said.

He had an injury to his head and police began investigating the case as a “possible child abuse” incident, cops said.

Because of his injuries, medics took him to Colombia Presbyterian Hospital, where he was later pronounced dead, police said.

Rodriguez was brought into the 40th Precinct and grilled by detectives Tuesday, police said.

He told cops he was taking the boy home when he “inadvertently struck the child’s head against the wall,” a police source told The Post.

Rodriguez, who has four kids, was previously arrested for a felony assault on one of his other children, the police source said, although additional details were not immediately available.

He was being held in the 40th Precinct Station house on Monday night.