In the 10.15pm incident on Sunday, the family and some others had gathered at a field there when a team of policemen on patrol duty approached them.

Ampang Jaya district police chief ACP Hamzah Alias said the man tried to flee the scene but failed to do so when the motorcycle fell to the ground.

“The suspect, who panicked, flung his son away and tried to flee but he was apprehended by police.

“His wife and the other friends escaped,” he said at the Taman Melawati police station here today.

Hamzah said the boy, who sustained injuries and bruises on his back, was taken to the Ampang Hospital.

He said initial investigations revealed that the man, who tested positive for drugs, was using a stolen motorcycle and had a criminal record for drug-related offences.

“We are closing in on the suspect’s wife, aged 27, to facilitate investigations,” said Hamzah.