'Largest drugs operation' in Gwent Police force history
Gwent Police has undertaken one of the biggest drugs operations in its history.
The force said 300 officers carried out 14 simultaneous warrants in Newport at 05:00 GMT on Tuesday, after three hours of briefings.
Four people have been charged with the supply of class A drugs, with 25 arrested in total.
It followed information from the community about the supply of drugs.
Ch Insp Matthew Williams said the force had noticed a rise in Newport the last year or so.
Marc Budden, of Gwent Police, said: "This is the largest scale drugs operation we've seen in Gwent.
"[The operation] involved specialist method of entry officers utilising chainsaws and drills to ensure rapid entry."