Armed police officers swooped on a house in Haverhill during a dramatic operation on Sunday afternoon.
The Echo understands at least eight armed officers and nine police vehicles, plus a helicopter and two dogs, were in attendance at the incident in Connaught Road, which took place at about 4pm.
It is thought the raid was linked to Operation London, which uses intelligence provided by members of the public to detain drug dealers from north London and seize Class A drugs they are attempting to bring to the streets of Haverhill.
A police spokeswoman confirmed that Sunday’s events were part of a routine police operation.
“As a result four men have been arrested on suspicion of supplying a controlled drug,” she said. No drugs are believed to have been found during the raid.
A 43-year-old man from Haverhill, an 18-year-old man from London and two 17-year-old males from London were arrested and have been bailed to return to the Bury St Edmunds Police Investigation Centre on February 25, pending further police inquiries.
Operation London has already resulted in hundreds of wraps of heroin and crack cocaine being confiscated and a number of suspected drugs dealers being arrested.
A series of raids at properties in Haverhill in the space of one week in early December resulted in 550 wraps of Class A drugs, either crack cocaine or heroin, being seized.
Six people were arrested and large amounts of cash seized. In one raid alone a sum of £2,500 was confiscated.
One of the women arrested had reportedly stashed about 100 wraps of drugs in her bra in an effort to avoid it being found.
The raids followed the seizure of 89 wraps of crack and heroin in late October.
After the successful raids in December, Insp Peter Ferrie of Haverhill police said: “I would appeal to the public to report any concerns they may have about strangers moving in to properties on the Clements and Chalkstone, particularly if they see these strangers engage in activity like having short meetings and cash and small packages being exchanged.
“We have the resources to carry out really effective raids on drug dealers in Haverhill, as long as we get the initial information from the public.”