Multiple injured after 'unprovoked attack' with hockey stick in Frankston

Multiple people have been injured and an offender is on the run after a hockey stick attack south-east of Melbourne.

Police believe an offender assaulted a man and vehicle while armed with a hockey stick just after midday, on Casuarina Drive in Frankston South.

The man then assaulted three women walking near Sweetwater Creek Reserve, a short time later in "another unprovoked attack", police said.

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Paramedics treated a man and two women for minor injuries and a third woman was taken to hospital with non-life-threatening injuries for observation.

The offender remains on the run and is described as aged in his 30s, Caucasian and had acne scars on his face.

He was wearing a dark-coloured jacket and jeans and may be holding a hockey stick or metal pole.

Police believe the parties involved are not known to each other, and investigations are continuing.