Police are investigating the armed burglary of a pharmaceutical business in Mansfield overnight.
Around 10.20pm, an unknown number of offenders have forced entry into the Wecker Road business.
A 32-year-old male security guard, responding to an alarm activation, attended the scene and was confronted by a male armed with a firearm demanding he hand over his car keys and other property.
After complying with the offender’s demands, the arrival of a second security officer appears to have caused the group to flee via a nearby vehicle.
No one was injured and it is unclear at this stage if any property was stolen from the premises.
Anyone with information which could assist police with their investigations should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.