Blood Drill Killers gang targeted by police in Melbourne's west

Police say they're confident they know the identities of most or all of an emerging gang from Melbourne's western suburbs.

A group calling themselves BDK - Blood Drill Killers - is made up of mostly teens who have been linked to robberies and affray offences, police said.

It's believed the group also has ties to another western suburbs gang called Menace to Society, a reference to the 1990s US teen drama.

"Police have been monitoring the group for several months now and Wayward Taskforce are confident they know the identity of the majority, if not all, BDK members," police said in a statement.

Shopkeepers have told 9News members of the gang arrive in packs at St Albans train station most days after school.

Police believe the members meet after school but organise and mobilise via social media.

A number of BDK members have been arrested in recent weeks and police have increased their presence in the city's west ahead of New Year's Eve.