Dad to be questioned over skateboard fall

A Sydney father is expected to explain to police on Monday why he towed his 12-year-old son on a skateboard behind his car.

The boy fell to the ground as he and two friends were riding skateboards in inner suburban Marrickville on Saturday night.

The three were allegedly holding the rear of a Kia Sportage, with the 12-year-old's father behind the wheel.

The man's son fell and hit his head on the road.

He was taken to Randwick's Children Hospital where he was placed in an induced coma. He has a fractured skull and bleeding on the brain.

Police hope to interview the father on Monday, after which they will decide whether or not to press charges.

Crash investigation unit inspector Phillip Battin says police believe the father was fully aware he was towing the boys.

The father has told Network Ten in a statement he was shattered.

"I am just devastated," he said.

"I just ask that you pray for my son."

The 12-year-old remains in a critical condition.