Authorities have reported that two 13-year-old boys were riding their e-bikes on the Koonung Creek Trail in Doncaster East when they encountered an unsettling incident around 5 p.m. on Monday. The boys were approached by two masked individuals.

According to the police, the assailants attacked one of the boys and managed to steal his e-bike. Fortunately, the boy sustained only minor injuries and was able to escape without needing medical attention.

The second boy, gripped by fear, attempted to flee on his e-bike. However, the masked individuals pursued him, police stated.

In his attempt to escape, the boy collided with a wall near the Blackburn Road underpass, resulting in serious injuries.

He crashed into a wall near the Blackburn Road underpass and suffered serious injuries.

The offenders then caught up with the injured boy, stole his bike and rode off without assisting him.

The 13-year-old was taken to hospital with critical injuries including skull fractures, a severely broken leg and a broken nose.

“He’s still in quite a serious condition, so much so that we haven’t been able to speak to him personally to see what he remembers,” Senior Constable Liam Webb said.

“It’s quite deplorable seeing another human being laying down, in the bush, in pain, to just take his bike and ride off without rendering any help, it’s quite disgusting.”

Both offenders are described as Caucasian, around 15 years old, 165cm tall, and were wearing black ski masks and black clothing.

One offender had black hair and was wearing a multi-coloured BAPE hoodie.

Police have released an image of the stolen bikes in the hope anyone who was in the area at the time recognises them and can come forward with information.