Detectives from South East Criminal Investigation Branch have arrested three youths following an aggravated armed robbery at a convenience store on Liverpool Street in Hobart last night.

Police will allege three youths entered the store wearing face coverings and assaulted the male staff member with a hammer before stealing the till containing a quantity of cash.

The staff member received medical treatment at the Royal Hobart Hospital for non-life threatening injuries and he has since been discharged.

The three youths – aged 14, 16 and 16 – will be detained in custody while investigations continue.

Anyone with information should call South East CIB on 131 444 or Crime Stoppers Tasmania on 1800 333 000, or online at crimestopperstas.com.au. Please quote OR813983.