Two child suicides in Colombia have been linked to a sinister internet game that's been sweeping South America.

Local media reports a 12-year-old girl and 16-year-old boy took their own lives in the town of Barbosa.

RCN Radio claims the two children were playing a challenge based game — believed to be the "Momo" challenge — on the internet.

It was reported the boy had passed the game onto the girl before his death. Both died within 48 hours of each other.

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Last month news of the "Momo" challenge swept the internet after it was linked to the suicide of a young girl in Argentina.

The online game has appeared on social media platforms WhatsApp, Facebook and YouTube and led to police in Mexico issuing a warning to parents.

"Young people are accessing it, the game has several challenges, they are accessing them and in the end it leads to suicide to finish the game," Janier Londoño, government secretary of Barbosa in the Antioquia region told the Caracol news outlet in Colombia.

Last month news of the
Last month news of the "Momo" challenge swept the internet after it was linked to the suicide of a young girl in Argentina. Photo / Supplied

"Momo" reportedly begins with an avatar — taken from an edited photo of a sculpture by Japanese artist Midori Hayashi — instructing the victim and sending them violent taunts over messaging apps. Momo then threatens the player if they refuse to follow the game's orders.

Eventually they are challenged to take their own life.

It's believed the game originated in a Facebook group, but the creepy "Momo" avatar image originated from an Instagram photo of the sculpture that has been cropped and enhanced to appear creepier. Midori Hayashi is not associated with the "Momo" game.

Local police have said WhatsApp phone numbers linked to "Momo" accounts have been registered in Colombia and Mexico.

Despite the innocent origin of the "Momo" character, the game has become far more sinister and continues to spread in South America and parts of Asia.

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Outrage over "Momo" has led to Pakistan slapping a ban on it and other "suicidal video games".

"These games don't have any place in Pakistan which convince youth to commit suicide to get rid of its miseries," Federal IT Minister Dr Khalid Maqbool Siddiqui said.

In India's Bhubaneswar region police have gone to schools to inform students of the dangers of playing the game.

The "Momo" challenge has been compared to the Blue Whale game which sparked concerns last year. Blue Whale involved encouraging youth to undertake daily tasks which included self-harm and watching horror films. It's understood the Blue Whale challenge led to about 100 teen deaths in Russia.

WHERE TO GET HELP:

If you are worried about your or someone else's mental health, the best place to get help is your GP or local mental health provider. However, if you or someone else is in danger or endangering others, call police immediately on 111.

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OR IF YOU NEED TO TALK TO SOMEONE ELSE:

LIFELINE: 0800 543 354 (available 24/7)
• SUICIDE CRISIS HELPLINE: 0508 828 865 (0508 TAUTOKO) (available 24/7)
YOUTHLINE: 0800 376 633
• NEED TO TALK? Free call or text 1737 (available 24/7)
KIDSLINE: 0800 543 754 (available 24/7)
WHATSUP: 0800 942 8787 (1pm to 11pm)
• DEPRESSION HELPLINE: 0800 111 757​