Victim Xavier Ferrari, who did not want to be identified in the picture, with his friend Ricky. Credit:Nine News

A 16-year-old boy has been arrested in Melbourne's outer west and charged after two teenagers were mugged and beaten outside a train station, as police continue to hunt for a second perpetrator.

The 14-year-old and 17-year-old boys were set upon by a group of about 20 youths as they got off a bus last Sunday.

They were left bruised and traumatised after the 14-year-old was mugged for his phone, AirPods and gold necklace.

On Saturday morning, police swooped on a Brookfield home on Turpentine Road, arresting a 16-year-old boy at about 7.30am.