Glenview Police are among the most recent departments reporting a disturbing number of violent crimes, some involving juvenile gang members, in the north suburbs.

Residents in these communities are increasingly more cautious as the numbers keep growing. Niles Police say they're seeing much of the same. Evanston, Lincolnwood, Morton Grove, Northbrook and Winnetka have also tweeted about crime in recent weeks.

Police are working together to stop an organized crime ring involving armed robberies, auto thefts and burglaries.

One attempted carjacking victim NBC 5 spoke to earlier this week on Chicago's North Side said offenders held him at gunpoint and demanded his keys.

Another victim was robbed at gunpoint in Skokie last Monday night.

The same group of young men may be responsible for an attempted carjacking in Wilmette.

Glenview Police say there have been some arrests linked to the incidents in the area involving vehicles with keys left in them.

The crimes are occurring at shopping centers, gas stations and homes, police said.