And , alerts are classified as either `` elevated '' or `` imminent . '' Australia increases terror alert level for first time in 11 years . The Australian government has raised its terrorism threat to the highest level, warning of a possible attack on public transport and other targets within days. However , PM says no specific threat has been made .
Australia increases terror alert level for first time in 11 years . The Australian government has raised its terrorism threat to the highest level, warning of a possible attack on public transport and other targets within days. However , PM says no specific threat has been made .