Victoria is working closely with its federal counterparts to ensure the state is ready for any terrorism threat, the state government says.

Victorians should go about their business and not shy away from attending major events but must remain vigilant, Premier Denis Napthine says following terror raids in NSW and Queensland.

“We cannot allow terrorists or threats of terrorism to stop us from going about the ongoing conduct of our daily lives,” Dr Napthine told parliament on Thursday.

“Raising of the terrorism alert shows the need to be vigilant as we go about our daily activities and we should report any suspicious activity to the police,” the premier said.

Dr Napthine said Victoria is a safe, secure part of the world, but is at its highest level of preparedness for any terrorism threat.

His comments came after 15 people were detained and one person charged with terrorism offences, following pre-dawn raids across Sydney and Brisbane on Thursday.

There have been no such raids in Victoria.

But one counter-terrorism expert has predicted raids in Melbourne over the next day or two.

Neil Fergus, the boss of Intelligent Risks, told Fairfax Media the only surprise about the co-ordinated raids in Sydney and Brisbane on Thursday was that they did not include Melbourne.

But he stressed he was not talking with any “privileged knowledge of the conversations happening in the corridors of ASIO”.

Dr Napthine said Victorian police and government agencies are working closely with their commonwealth counterparts to ensure the state is ready for any possible threat.

Police are also working closely with operators of major events, such as the AFL grand final, he said.