Drug raids prompted by rise in class A drug use concern
A raid was carried out on 14 addresses by 300 officers on Tuesday, prompted by concerns over a rise in the use of class A drugs.
Gwent Police's Ch Insp Matthew Williams told BBC Wales members of the public and agencies had highlighted issues in Newport, leading to one of the force's biggest ever operations.
The raid began at 05.00 GMT and by 12.00, 20 people had been arrested.