Mexican agents find heroin inside tamarind candy In a find that gives a new dimension to "trick or treat," Mexican agents inspecting a package being sent to England found 59 rolls of tamarind-flavored candy with heroin inside

MEXICO CITY -- In a find that gives a new dimension to "trick or treat," Mexican agents inspecting a package being sent to England found 59 rolls of tamarind-flavored candy with heroin inside.

The National Guard said Friday that agents used x-rays to inspect a cardboard box headed for an address in London.

When they opened the box, they found a black substance at the center of each roll. Mexican-produced heroin is often referred to "black tar," because it is processed differently than white or tan powder heroin.

The candy is made of tamarind pulp, which is normally reddish-brown in color. Tests later confirmed the substance was heroin.