Detectives are investigating if speed and alcohol were factors in the collision.
Investigations are underway following an overnight crash in Perth's north.
Around 9.20pm a 39-year-old woman was driving her Holden Malibu through traffic lights at the Marmion Avenue intersection in Butler before she lost control of her vehicle on Kingsbridge Boulevard.
Police said the woman's car collided head on with a Holden Commodore being driven by a 33-year-old man.
The woman received a leg injury, the commodore driver also received leg injuries, while his two passengers, a 29-year-old man and a 30-year-old man also received injuries.
Traffic Enforcement Group officers are now investigating the incident and whether speed and alcohol were factors in the crash.
Anyone who may have witnessed the incident or the vehicles prior to the crash is asked to call Crime Stoppers on 1800 333 000 or make a report online at www.crimestopperswa.com.au
Bridgetown artist takes out top prize in 2025 Rockingham Castaways Sculpture Awards
'I am deeply sorry': WA Governor formally apologises over 1834 Pinjarra Massacre
Port Kennedy man charged with reckless driving after youths spotted hanging out car windows
Peel region businesses, organisations encouraged to apply for new round of RED grants
Record breaking attendance at Luca's Legacy clean-up with 500kg of rubbish removed from Mandurah's waterways
Mandurah Police continue search for missing man
New mural unveiled at Austin Lakes Baptist College
MARC staff recognised at 2025 Royal Life Saving WA Bravery Awards
Hefty fines for local fisherman after catching pink snappers out of season