Police have charged two youths and a young adult over a series of offences in southern Tasmania last week.
The offences, all allegedly committed on Friday, include a deliberately lit property fire at Otago, damage to vehicle windows, the theft of an e-scooter and the attempted theft of a mobile phone.
Police have charged an 18-year-old Otago man and a 15-year-old boy with two counts of arson, aggravated armed robbery, attempted aggravated armed robbery, aggravated burglary and four counts of stealing and destroy property.
A 12-year-old girl has also been charged with aggravated armed robbery, attempted aggravated armed robbery and other offences.
The man was detained to appear in court, and the youths were bailed to appear at a later date.
Investigations are ongoing, and anyone with information is asked to contact Bellerive CIB on 131 444 or Crime Stoppers Tasmania at crimestopperstas.com.au. Information can be provided anonymously.