Manhunt under way for man accused of shooting dead two officers and wounding another in southeastern state of Victoria.

Police in Australia are searching for a gunman who shot dead two officers and wounded another at a rural property in the southeastern state of Victoria, authorities have said.

The shooting occurred shortly after 10:30am on Tuesday as 10 police officers were attending the property in Porepunkah, about 300km (186 miles) northeast of Melbourne, Victoria police said in a statement.

Police urged the public in and around Porepunkah to remain indoors until further notice, and asked people not to travel to the area.

“The exact circumstances surrounding the incident are still being determined and it remains an active and ongoing situation,” Victoria police said.