An Australian woman faces life imprisonment for swallowing 320 condoms containing a total of 300 grams of heroin. She was picked up by authorities after her flight from Singapore landed in Sydney. The news reports don't say how the fuzz knew the women was smuggling the drug. Probably a tipster. Link
I'd wager on drug mule behavior before I'd wager on a tipster. Cops employ smuggler profiles to catch these types of smugglers. It's interesting stuff.
Here's some links: