A $5000 reward is on offer to find those who deliberately ran over 17 kangaroos on Brisbane's outskirts.
People for the Ethical Treatment of Animals (PETA) Australia has offered the cash reward for information leading to the identification and conviction of those responsible.
The animals were discovered on Monday morning on a 100-metre stretch of road at Wacol, between the women's and men's prisons.
The RSPCA is following up on some potential leads but has again appealed for witnesses to come forward.
PETA Australia's Jason Baker said he hoped the "coward" animal abusers would soon be found.
"We're appealing to anyone with information on the person or persons responsible for these cruel acts to come forward so that the perpetrators can be put where they belong: in jail," he said.
