Police are offering a $1 million reward, the biggest in Queensland’s history, as part of their investigations into the murder of Toyah Cordingley.

The 24-year-old woman was attacked and killed while walking her dog along Wangetti Beach, north of Cairns, in October 20-18..

Police say the prime suspect, Rajwinder Singh, is believed to have fled to India in the days after Toyah’s death.

Police are now hoping a $1 million dollar reward will lead to information that could assist them in tracking down and arresting him.

An extradition order has already been signed by the Indian government.

Detective Acting Superintendent Sonia Smith said there is a dedicated team working on the case.

“We strongly believe there are people in Australia and overseas who could share information about the whereabouts of Rajwinder Singh,” she said.

Deputy Commissioner Tracy Linford said it is hoped the reward will help track down Mr Singh.

“It is critical we capture the attention of an international audience to reach this individual,” she said.

“Police will not give up – we remain incredibly determined to find answers for Toyah’s family and will do whatever we can to bring them closure.”