Northern Territory Police have a 13-year-old male in custody following an indecent assault in Casuarina this afternoon.

It is alleged that the youth indecently assaulted a 15-year-old female in an undercover area near an automotive workshop at approximately 2.30pm. 

Police were alerted and quickly apprehended the male.

A crime scene has been established and investigations are continuing.

Anyone with information related to this incident is asked to contact Police on 131 444 or Crime Stoppers on 1800 333 000.