At about 9.20pm, police were called to a carpark on Canterbury Road, Campsie, after reports a man had been injured.
A 27-year-old man was found with gunshot wounds to his head and chest.
He was taken to hospital in a serious condition.
At about the same time, emergency services were called to Kilkee Avenue in Kingsgrove after reports of a car fire.
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A Mercedes sedan had crashed into a house before catching on fire.
The blaze has been extinguished and no injuries were reported.
Police are investigating whether the incidents are linked.
