More than 200 people have been arrested in a series of raids on Merseyside, part of the Project Medusa operation, which targets county lines drug networks. The raids seized more than 18kg of heroin, crack cocaine, cannabis, nitrous oxide and ketamine. The arrests were made for offences including possession of a Class A and B drug, possession of an offensive weapon, drug driving, and intent to supply. The operation also played a significant role in Operation Vanguard.