Dawn raids saw seven people arrested as part of a crackdown on the supply of drugs in Bury.
Greater Manchester Police (GMP) executed warrants at properties across five addresses in the Heywood and Bury areas.
The warrants were part of Operation Ballerina – set up by GMP to target those believed to be involved in the supply of Class A drugs across Bury.
Five men – aged 26, 65, 58, 22 and 34 – and one woman – aged 28 - have all been arrested on suspicion of supplying Class A drugs.
A 17-year-old boy has been arrested on suspicion of possession of Class B drugs.
Superintendent Paul Walker, of GMP’s Bury district, said: “We absolutely do not tolerate the supply of drugs, and we will continue to take action if there is any suspicion of offences being committed in Greater Manchester.
“Thanks to the speedy actions of officers this morning, a significant amount of drugs destined for our streets have been seized.
“Operation Ballerina is very much ongoing, and we are continuing to crack down on the supply of drugs across Bury and the wider region.
“Our most powerful tool in the fight against drugs is the information we receive from the community. If you suspect drugs are being used or cultivated in your area, we urge you to get in touch with the police as soon as you can.”