Parents in Quebec City are being investigated by police and youth protection after leaving their seven-month-old baby in their car while they caught a show.

CTV Montreal's John Grant reported Monday that a woman called police after following the sounds of a baby crying to the locked car at around 11:30 p.m. Sunday. The temperature hovered around zero degrees, Grant said.

"The child didn't have any boots," said Quebec City police spokesperson Sandra Dion. "The child has socks, and a wool sweater and he didn't have any, no hat and no mittens. And he was crying when the police officer found the child."

Officers canvassed the neighbourhood and found the parents at a nearby dinner theatre.

According to police, the father became aggressive when the officers admonished him for leaving his child in the car.

The father told them he had done it before and didn't appreciate lessons in parenting.

He has been charged with insulting a police officer and for leaving a child under the age of seven unattended in a vehicle, and the couple was fined $400.

Grant said the police investigation is still open and the directorate of youth protection will open their own investigation.

The child was not injured and did not suffer from the cold weather.

With a report from CTV Montreal's John Grant