Australian police say the teenage victim had traded explicit images with a person online before they began making threats and demanding money.

After a global investigation, the pair allegedly responsible were tracked down in Nigeria, where they will face court. Police say sextortion - particularly of young people - is dramatically rising.

Details of the boy's age or where he lived in New South Wales (NSW) have not been released publicly to protect his family's privacy.

New South Wales Police described the alleged extortionists as "young males" and said they had threatened to send photos to the teenager's friends and family if he did not pay them A$500 (£260; $330).

"The messages are horrific. They're aggressive and put a lot of pressure on the boy to pay the money," the police force's cyber-crime commander, Matthew Craft, told the Sydney Morning Herald (SMH).

The boy died by suicide on the same evening, late last year.

Australian detectives worked with their counterparts in South Africa and Nigeria to trace the suspected perpetrators to a slum in Nigeria with a population of over 25 million people.

Evidence that the pair had also tried to extort other people was found on their phones, according to the SMH. They have been charged over the alleged extortion of the Australian boy, but not his death.

There have been several cases in Canada and the US in recent years of teenagers who have killed themselves after being targeted by sextortion plots.