The Food and Drug Administration is warning consumers not to buy two types of energy drinks packaged in test-tube like vials, saying that utility knife blades were found in two vials in an apparent case of tampering.

The FDA said Sunday that the blades were found in one vial each of Hardcore Energize Bullet drink and New Whey liquid products. Both are being recalled, according to the FDA.

Hardcore Energize Bullet is manufactured by Protica Inc., of Whitehall, Pa. It is sold in Canada in two flavors, Blue Rage and Black Rush. Protica is investigating the incident.

New Whey is made and sold in the United States by IDS of Oviedo, Fla. It comes in two flavors, fruit punch and blue raspberry.

No injuries have been reported as a result of the tampering.