Three young girls have been vilified in a horrifying attack by a gang of youths in a suburban park.

The girls were punched and had their headdresses forcibly removed in the attack, which was carried out by about 10 youths, some thought to be as young as seven.

Aima Sadiq-Ali, Walija Iqbalali and Nadia Aliahmed were attacked in a park in Norlane. Credit:Channel Seven News Melbourne

Police said the girls, aged 15, 12 and 11, were at a park in the Geelong suburb of Norlane about 5.30pm on March 23 when they were approached by the gang.

The youths began to punch the girls, and stole and smashed their mobile phones when they tried to call police.