Police attend the scene of a multiple stabbing in the suburb of Manoora on Dec. 19, 2014 in Cairns, Australia. Eight...
Photo by Ian Hitchcock/Getty

Eight children found dead at home in Cairns, Australia

Eight children were found dead after a stabbing at their Australian home Friday, in what their country’s prime minister described as an “unspeakable crime.”

The 34-year-old mother of seven of the children, who ranged in age from 18 months to 15 years old, was being treated in hospital.

Queensland Police were called to the home in the Cairns suburb of Manoora at 11:20 a.m. Friday local time (8:20 p.m. ET Thursday) after a 20-year-old relative — described locally as an elder sibling of the victims — found the bodies.

“They’re only babies,” relative Lisa Thaiday told Channel 7 News. “Just shocking … you know, eight children gone.”

Both the victims’ mother and the 20-year-old man were assisting investigators but nobody else was currently being sought over the killings, Queensland Police spokesman Joe Marsden said.

This article originally appeared on NBCNews.com.

Eight children found dead at home in Cairns, Australia