Australia has struggled to reconcile with descendants of its first inhabitants, who arrived on the continent about 50,000 years before British colonists but are not recognized in the national constitution.

However, with public support on the issue growing, Minister for Indigenous Australians Ken Wyatt promised a referendum before 2022.

"I will develop and bring forward a consensus option for constitutional recognition to be put to a referendum during the current parliamentary term," Wyatt said in a speech in Canberra.

Australians must return to the polls by 2022 after Prime Minister Scott Morrison's conservative coalition government was returned in a "miracle" election win in May.

However, to meet the timetable Wyatt will need to facilitate an agreement between the government and indigenous leaders, who have demanded a bigger voice in the running of the country.

Indigenous leaders proposed in 2017 establishing an advisory body comprised of elected indigenous Australians enshrined in the constitution. The government rejected the proposal, insisting it would create a de facto third chamber in parliament.

The government has come under growing pressure since then to revisit the issue, with several corporate giants insisting that meaningful recognition is the only way to bridge the divide in Australia's population.

"A first nation's voice to parliament is a meaningful step towards reconciliation," BHP Chief Executive Officer Andrew Mackenzie said earlier this year.

Indigenous Australians account for about 700,000 people in a total population of 23 million and have tracked near the bottom in almost every socio-economic indicator, suffering disproportionately high rates of suicide, alcohol abuse, domestic violence and imprisonment.

Denied the vote until the mid-1960s, they face a 10-year gap in life expectancy compared with other Australians and makeup 27% of the prison population.

REUTERS