'My beautiful boy': Mother attends vigil for son allegedly murdered at station

A grieving mother has spoken for the first time since her son died at a train station in Melbourne's outer north-east.

Thousands of people stood in silence at a vigil last night to honour 22-year-old Aidan Becker, who was allegedly murdered by four teenagers as he tried to help a younger boy who was allegedly being robbed at Mernda Station on Friday, March 6.

His mother Natalie Becker addressed the crowd through tears with the support of his father and sister.

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"I know that my beautiful boy would have done it all again in a heartbeat because that's the boy he was," Mrs Becker said.

She also shared a moment of gratitude for the strangers who showed the same courage as her son.

"I thank you for trying. I thank you Anthony for telling my boy his family loved him because those would have been the last words he heard," she said.

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A tribute is growing at the spot where the hospital security guard took his last breath.

Dozens of flowers, candles and messages from strangers who never knew him but won't forget what he did. 

"The number of people gathered here is a powerful reflection of just how many lives Aidan has touched," local Farrell Paton said.

"Rest in peace Aidan, a real hero."

The Becker family say they have been overwhelmed with their community's outpouring of love.

More than $100,000 has been raised through an online fundraiser.

"The only reason we're here and not curled up in a ball somewhere is because of each and everyone one of you," Mrs Becker said.

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