Security remained heightened in airports around Australia on Monday with more intense screening of luggage after law enforcement officials said they had thwarted a plan to bring down an airliner.
[in] airports どんな→[around] Australia オーストラリアの空港で
[with] (more intense) [screening] [of] luggage 荷物の検査
S law enforcement officials
V [had thwarted]
O a plan
V [to bring down]
O an airliner.