In what apparently looks to be the handiwork of one gang, music systems of around 40 cars were stolen after breaking their windows in an east Delhi colony, the police Sunday said.

The thieves stuck Saturday night and stole music systems of around 40 cars after breaking window glasspanes in Mayur Vihar's phase I area, a police officer said.

The incident came to the notice of one of the car owners Sunday morning and he informed other neighbours about it.