Heads-up, if you've ever purchased prescriptions online. Drug Enforcement Administration Special Agent Jodie Underwood says international criminals are posing as federal agents, calling customers who have bought from rogue internet pharmacies. Under the extortion scheme, the bad guys threaten them with arrest if they don't pay a fine, supposedly for violating federal law. Underwood says if you are contacted by phone, hang up and report the calling number to the DEA. Details at www.dea.gov.