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.
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.