A man is being sought by police after allegedly striking his ex-girlfriend with his car and then running over her 9-year-old son’s foot in Brooklyn Tuesday morning, police said.

The 41-year-old woman told cops that she and her son were walking in front of 496 Williams Ave. around 1 a.m. when she ran into her 48-year-old ex-boyfriend, whom police officials identified as John Santiago.

The woman alleged that the former flame struck her with his silver Honda Accord and then ran over her son’s right foot.

The mom and son were taken to Brookdale Hospital and were expected to survive. The child’s foot was bruised but not broken, cops said.

The Administration for Children’s Services was alerted to the incident, police said.