Premier Daniel Andrews has come under fire for declaring Victorians must accept that violent extremism is part of contemporary Australia, as his government considers federal plans to beef up anti-terrorism laws.

Two weeks after a radicalised teen fatally shot a police worker in NSW, Victoria has not ruled out supporting Commonwealth plans to lower the age at which a control order can be obtained against a terrorism suspect, but says it requires more information from the Turnbull government.

Victoria's Coalition has accused Premier Daniel Andrews of adopting a defeatist attitude. Credit:Emma Morgan

However, back at Spring Street, a war of words erupted late last week, with Mr Andrews accused of "waving a white flag" by candidly suggesting that violent extremism is here to stay.

"We've got a range of work going on at the moment and I wouldn't pre-empt any announcements that we might make," the Premier said when asked if he supported lowering the threshold, "but all of us, as Victorians and indeed Australians, have to accept that violent extremism is part of a contemporary Australia."