NSW man charged over gang activity

Police investigating a gang rape in NSW's Blue Mountains uncovered more evidence which has led them to charge a 20-year-old man with directing the activities of a criminal group.

NSW Police on Thursday said the man was scheduled to appear in Katoomba Local Court on February 1.

The news comes three weeks after three men aged between 20 and 22 were charged with aggravated sexual assault in company over the 2012 gang rape of a 15-year-old girl at a party in Hazelbrook.

Police say those charges were the result of a strike force investigation into anti-social and assault offences in the Blue Mountains.

Further investigations led them to charge the 20-year-old.