The mother of a 14-year-old boy who was assaulted and robbed in a bathroom by eight 'African' teenagers claims adults witnessed the crime and didn't step in to help.

Jasmine Moey from Melbourne told Daily Mail Australia her son and his friends went to the movies at Highpoint shopping centre when they were attacked by a group of thugs.

The boys had gone to see a movie, had dinner and were in the shopping centre toilets when they were set upon by a group of African males.

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Two 14-year-old boys were robbed by a gang of eight African teenagers in Friday night at Melbourne's Highpoint Shopping Centre (pictured)

'My son's friend came out of a cubicle as the African boys walked in.

'They shoved him into the corner - then when my son came out they punched him in his left eye,' she told Daily Mail Australia.

The boy's other friend stayed in his cubicle - waiting until the thugs left to help his friends.

'My son said there were two men in the bathroom and they didn't do anything,' Mrs Moey said.

'The shopping centre was packed people would have seen the boys leave the bathroom but no one helped.'

The attacked happened at 7.15pm - the protective mother decided to let her son go with his friends to the movies because she wanted him to have some independence.

'I used to go and be physically in the mall when I went - but these boys are all big boys and will even have jobs soon so I wasn't concerned.

'It was still daylight outside when the attack happened and the mall was crowded.'

Mrs Moey's son told her the teenagers were aged from '15 to 18' and were 'African'.

The boys were told to hand over their phones - unlocked and with the 'find my Iphone' settings switched off (file image of an African Apex gang member)

'They stole his phone, and his friend's phone.

'They made them unlock them and take of the location settings.'

The attack lasted just a few minutes and left Mrs Moey's son with a black and purple eye.

But she says she will let her son go back to the mall.

'If he is confident to go again by himself I will let him.

'He is almost 15 and will have a part-time job soon so he does need to be independent.'

The boys were told 'not to chase' the young thugs who robbed them.

Instead they phone a police who arrived in 'five minutes' according to Mrs Moey.

Police are investigating.