A hit-and-run driver who killed a cardiac nurse in Melbourne was reportedly responsible for a previous fatal car crash.
Lynda Hansen died on Monday night after a stolen Lexus crashed into her car at Oakleigh, with the driver of the stolen car fleeing while nearby residents performed CPR on the nurse.
It has been reported the suspect in the crash was behind the wheel in another fatal collision, and may have been on bail when he crashed into Ms Hansen and left her for dead.
But Victoria Police was unable to confirm these details and a spokeswoman said an "internal document" with details of a suspect in the Oakleigh fatal crash had been leaked to news outlets.
"The investigation is at a critical phase and police are unable to confirm details of the investigation and are pursuing a number of avenues of enquiry," spokeswoman Natalie Savino said on Wednesday.
Ms Hansen's family said the beloved 53-year-old was a "very caring and family orientated" person.
"Lynda leaves behind many shocked and devastated friends and family members," the family said in a statement on Tuesday.
"She enjoyed overseas travel and loved to help people, especially her elderly mother."
The compassionate woman was dedicated to her spiritual life, enjoyed yoga and sang in a gospel choir, her family said.
Witnesses to the crash are being urged to come forward to help identify the driver, who is described as 181cm tall, with a solid build, aged in his 20s to 30s and with short dark thick hair.
He was wearing long shorts, runners and a dark T-shirt.