Westfield Bondi Junction stabbing hero tells how he desperately tried to save an injured baby's life after infant and mum were attacked

A hero who rushed to help a mother and nine-month-old baby after they were stabbed by a knifeman at Westfield Bondi Junction has told how he desperately worked to keep the infant alive using store clothes.

A major incident unfolded at the shopping centre in Sydney's eastern suburbs just before 4pm on Saturday afternoon when a knifeman went on a rampage, stabbing nine people - including a child. 

Six innocent shoppers were murdered before the killer - who wore a Kangaroos Australian Rugby League jersey - was shot dead by a female police inspector who went in alone to confront him. 

The killer is believed to have been acting alone.

Just before 5pm, a witness interrupted a Nine News reporter performing a live cross on the streets and pointed to his brother, saying: 'He's a hero - he saved the baby'. 

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The two brothers used clothing and shirts from a shop to try and stop the baby's bleeding

The clearly shaken man said he used clothes from a store to try and stem the baby's bleeding.

'The baby got stabbed and, yeah, the mum got stabbed,' he said.

'The mum came over with the baby and threw it at me. 

'I just helped by holding the baby ... and trying to compress the baby.'

The brothers stayed with the mother and called emergency services.  

'(It was) very bad... a lot of the blood on the floor ... hope the baby's alright,' the other brother said.

The baby's 38-year-old mother, Ash Good, later died in hospital.  

Follow Daily Mail Australia's live coverage of the Bondi Junction incident here  

Another witness, a worker at the shopping centre, recalled seeing a mother screaming on the level above.

'I see the mother and maybe her partner with a baby in a pram,' she told Nine News.

'She's screaming really, really loudly. She's running back and forth not knowing what to do.

'Then she comes back to the pram and picks up her baby and there's just blood all over her back.

'The scream was unforgettable, it was the scariest thing I've ever seen.

'My co-worker took me, we locked all the doors, had to turn off all the lights and doors'. 

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LIVEREAD MORE: FOLLOW DAILY MAIL AUSTRALIA'S LIVE COVERAGE OF THE BONDI JUNCTION INCIDENT HERE 

Shoppers run though Bondi Junction as police lock down the centre following reports of a major incident