Parents living in an upmarket suburb have been warned their children could be taking part in a TikTok craze that involves kicking in doors.
Police have warned parents on an estate in Gloucestershire that the situation is escalating and that "unacceptable behaviour" is on display.
Other police forces including in South Wales and London have also put out warnings because the trend is damaging property and frightening residents around the UK.
Although they do not specifically mention TikTok, police have warned that there is a craze for children to kick doors and run off so they can film it and upload it.
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But unlike the old 'knocky nine doors' of the past, it is usually more violent and there are reports of front doors being smashed in.
TikTok is said to feature clips of youngsters kicking doors to a backing track of Kesha's song Die Young.
As Kesha sings "I hear your heart beat to the beat of drums", they kick the door twice to make banging noises.
Gloucester Police in particular were called out to a large estate near the villages of Hardwicke and Haresfield, to reports of doors being kicked.
Youngsters have also caused criminal damage by spraying blue paint on a property on the estate where the average house price is £300,000.
Gloucester City Police tweeted on Saturday: "Do you know what your children are up to in Huntsgrove?
"Unfortunately this week and overnight again kicking doors.
"They have also caused damage by spraying a house. Crimes raised. Victims contacted. unacceptable behaviour."
Sgt Non Edwards of North Wales Police uploaded one of the videos and said: "We have had an increase of calls reporting this stupid act which is causing people to be fearful in their homes.
"I would ask all parents - do you know where your children are and what they are doing - how would you feel if they did this to your parent or grandparent?"
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