Police found suspected Class A and B drugs after a car was stopped on the A14 near Bury St Edmunds.
The driver of a BMW – going eastbound on the A14 at Risby – was stopped shortly before 6.40pm on Sunday by Norfolk and Suffolk Roads and Armed Policing Team.
Police said his passenger then allegedly fled the car, threw a white bag away and was detained a short time later.
Both men, one aged 32 and the other 38, were arrested on suspicion of possession with intent to supply Class A drugs.
They were taken to Bury St Edmunds Police Investigation Centre for questioning, where both have subsequently been released under investigation, pending further enquiries.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here