UPDATE: Kwinana Freeway reopened just after 2pm today.
A man was killed in a crash on the freeway near Stake Hill after 7.45am today.
Police are investigating this crash and one that happened beforehand near Paganoni Road, Karnup.
The Stake Hill crash occurred a short time later near Lakes Road.
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Motorists experienced lengthy delays in the area as officers conducted their investigations into the crash.
Police asked that anyone who witnessed, or recorded the crashes on a dash cam to contact Crime Stoppers on 1800 333 000.