Children playing a popular online game have been sent videos of sexual abuse.
Mums have begun sharing alarming stories online about the vile content that has been aimed at their kids on Among Us.
The game, which has become hugely popular online in the past year, has a chat function which has been exploited by some gamers intent on sending sexual messages to children.
One woman's daughter was with friends speaking to a newly joined player of the game when suddenly they were sent a video showing child sexual abuse.
The stranger then asked her daughter what she thought of it.
"They immediately blocked him and my daughter came and told me," they told Sun Online.
The mum said that the player was kicked out of the game after she reported them.
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She also made a police report but the force was not able to take any action.
One player reported being targeted with violent sexual threats.
They wrote: “Trigger warning, I was playing among us and these people were saying they want to rape my dead body. What the hell.”
Other parents have warned of children being "tricked" into giving their numbers to strangers, and then engaging in text conversations with them.
The meteoric rise of Among Us - which was downloaded more than 40million times in September alone - may have caught parents napping.
The game play is suitable for young people, but it features a chat function which opens up players to comments from strangers.
Andy Burrows, NSPCC Head of Child Safety Online Policy, said: “Games with chat functions like Among Us carry grooming risks because abusers can use them to make contact with kids and exploit their interest in the game."
One mum said their child told her that he had been asked for personal details on the game.
"He comes and tells (me) that some weirdo ask him for his address on the game luckily he told us so we can inform you parents," she wrote online.
"He said he ain't going to give anyone information because he don't want to be kidnapped.
"When he responded back with what 'you want my address for' the person left the chat. Please be aware and talk to your kids."
A spokesperson from InnerSloth, which produces Among Us, said the game is designed for kids aged 10 and older and does not allow players to post phone numbers, images, videos, and links.
The game has filters designed to stop "harmful or derogatory language", they said, with additional safeguards including accounts with higher levels of moderation and reporting abilities to be introduced soon.
"We take all forms of verbal and physical harassment, discrimination, and illegal behavior seriously," they said.
The spokesperson advised being alert and aware of standard online safety practices, and for parents to report troubling behaviour they encounter or hear about on the game.