Police charge sixth teen over January attack in Lidcombe that left young man with serious brain injuries

A sixth teenager has been charged over a group assault and robbery in Sydney's west in January that left a man with serious brain injuries.

The 22-year-old was attacked by seven people in Lidcombe early on Sunday January 17, after chasing a 14-year-old girl who had snatched his phone, police said.

He was rushed to Westmead Hospital with serious head injuries and is expected to remain in intensive care for several months.

A 15-year-old boy has been charged with reckless grievous bodily harm in company, steal from person and breach of bail and is expected to front a children's court today.

A 16-year-old boy and two 14-year-old girls have already been charged, while two other girls, aged 14 and 15, have received official cautions in line with the Young Offenders Act.