Four people have been killed in two separate crashes in a horror 24 hours on West Australian roads.

Three people died after the car they were travelling in crashed into a tree in Perth’s east on Saturday morning.

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Three dead after horror crash in Perth

Three people have been killed in a horror crash in Stoneville after a car left the road and ploughed into a tree.

WA Police said the vehicle was travelling along Stoneville Road near Timbertop Way and La Grange Road when it left the road and hit a tree about 8.55am, fatally injuring the 58-year-old man driving the car and his passengers, both men aged 62.

Brent Fuller was at home nearby when he got a message saying there had been an accident at the intersection of his street.

“I came around the corner and saw the car there wedged between two trees,” he told 9News Perth.

“It was pretty serious. The roof was semi ripped open. It was pretty mangled, and it’s an old car too, so it’s made out of proper steel.

“It was wedged inside two trees – only 1.5, maybe 2 metres wide.

“A tree was on top of it as well. A bobcat was already here getting ready to pull it off, just trying to open it up for the emergency services as best they could for when they got here.”

Fuller and other passersby tried to help the occupants inside.

Other neighbours said they heard revving before a loud bang, with no sounds of brakes.

Another witness said she saw the vehicle “careen” past her, veering into her lane.

“I think they over corrected and ended up sideways pinned between two trees,” she said.

The road was closed as officers from the Major Crash Investigation Section examined the scene but has since opened.

Meanwhile, a 24-year-old man was killed when he crashed his Harley Davidson motorcycle on Hammersley Street in Toodyay just after midnight.

Police said the man was riding near the intersection of Fiennes Street and Duke Street when he lost control and crashed. He died at the scene after sustaining critical injuries.

Major crash investigators are urging any witnesses to either crash, or anyone with information, to contact Crime Stoppers.