Update: Tasmania Police say: A 20 year old Berriedale man is in custody following an alleged armed robbery at a Hobart pharmacy today.

Police were called to the Guardian Pharmacy in Main Road, Montrose, about 9.05 today after a man allegedly demanded property.

Upon police arrival and as the man was leaving the scene, the man allegedly produced a knife.

Police attempted to negotiate with the man, who was taken into custody a short time later.

The man was not injured during the incident.

Two police officers were injured during the incident and are receiving medical treatment.

Inquiries into the incident are ongoing.

As is normal practice, Professional Standards has been advised and will review the circumstances surrounding the incident.

Anyone with information should contact Glenorchy Police on 131444 or report anonymously to Crime Stoppers on 1800 333 000