A prank caller dialled 999 to report a "gorilla" in a town centre in Leicestershire in a call released by police to remind the public to only use the line in an emergency.
The teenager made a hoax call to ask officers to attend a shopping precinct in Coalville.
When asked for his contact information, the caller said: "I've forgotten where I live because I'm on loads of cocaine."
Leicestershire Police warned: "These calls can prevent real emergencies from being addressed promptly.
"Only call our 999-emergency line when it's absolutely necessary. Every second counts in an emergency."
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