Three people have been arrested in Norwich in connection with drug supply offences.
Officers issued at warrant at an address in Heigham Street on Friday morning and seized a quantity of what is believed to be Class A drugs, a large quantity of cash and drug paraphernalia.
A man aged in his 20s and from the London area has been arrested on suspicion of possession with intent to supply a Class A drug.
A 16-year-old girl and a 16-year-old boy, both from the Surrey area, have both been arrested in connection with drug offences.
All three remain in police custody at this time and will be questioned by officers.
The arrests are part of Operation Gravity which has been running for more than 100 days since Norfolk Constabulary declared a critical incident in response to serious drug-related violence across the county.
In that time more than 152 arrests have been made, with many from the London area.
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