Concerns children are playing a dangerous 999 'game' where points are earned for what police response turns up are being investigated.
Police chiefs confirmed an incident reported on Monday night in the Tameside area is being currently looked into.
And they warned hoax calls can lead to 'quite serious ramifications' - including criminal convictions.
READ MORE: Teenager charged with murder of Dylan Keelan who was stabbed to death
Parents are being urged to speak to their children and ask them where they are going of an evening and what they are doing.
Greater Manchester Police said: "We have already had one incident last night that is being investigated and if it is found to be a hoax call then the person responsible will likely be arrested and charged with wasting police time.
"This will potentially have a massive impact on their future as it will be a criminal conviction."
No further details have been revealed by the force.
The incident under investigation - or its location - hasn't been further described either, but it's believed to have happened in Hyde.
In a Facebook Post, an inspector at Greater Manchester Police's Tameside South and West division said: "It has been brought to my attention that some of our local youths may be engaging in a game whereby the police are contacted and they earn points for what response turns up.
"If this is the case then there are some quite serious ramifications.
"Please have conversations with your children around where they are going to be in the evening and what they are doing.
"We have already had one incident last night that is being investigated and if it is found to be a hoax call then the person responsible will likely be arrested and charged with wasting police time.
"This will potentially have a massive impact on their future as it will be a criminal conviction.
"Whilst I am aware of the lack of youth services following cutbacks, it is something I want to work with partners towards diversion rather than criminalising behaviour.
"My officers will engage with your children and value their input in what they want in the local area so that we can pass it back to partners or have them join us out on patrol. Come and speak to the officers or drop the team an email."
