A teenage Perth boy who allegedly crashed a car he was driving into another vehicle killing a husband and wife in the northern suburbs of Perth has been refused bail after a brief court appearance.
The 16-year-old appeared in the Perth Children's court on Monday and broke down in tears during the hearing.
The boy's lawyer applied for bail, but the judge refused and the teenager was remanded in custody until his next court appearance on September 30.
The 16-year-old boy from Marangaroo, has also been charged with a string of offences, including two counts of manslaughter, dangerous driving causing grievous bodily harm, having no authority to drive and breach of bail.
A 60-year-old woman and her 66-year-old husband died after a 16-year-old boy driving a Ford Falcon t-boned the Nissan Pulsar the married couple were driving in Warwick on Saturday night.
The couple's 25-year-old son who was driving the Nissan, is in a critical condition in Royal Perth Hospital.
Police had been originally pursing the Ford, but pulled out of the high-speed chase as the teenage boy was allegedly driving erratically.
The 16-year-old boy from Marangaroo, has also been charged with one count of dangerous driving causing grievous bodily harm, dangerous driving causing bodily harm, failing to assist at the scene of a crash, failing to report a crash, driving without a licence and failing to stop.
He is due to face the Perth Children's Court on Monday.
Police deputy commissioner of operations Stephen Brown told reporters on Sunday there would be a "rigorous and comprehensive investigation" into why officers pursued the Ford.
"The nature of the pursuit, what gave rise to it, the duration of it and what happened there after," he said.
"What I do know is our officers in that vehicle were appropriately trained and the class of vehicle they were travelling in was right within our policy settings.
"We've got limited facts... we haven't been able to interview the 16-year-old driver that evaded police nor the passenger, but the police officers have been interviewed... but all those facts need to be brought together."
Mr Brown said the officers involved in the chase were "clearly distressed" after attending the crash scene.
"As you would imagine anybody, despite their training, going about your duty in good faith... to be involved in such a situation has a massive impact on individual officers," he said.