NEW YORK - Monster Beverage responded yesterday to a lawsuit that alleges its energy drinks caused the death of a 14-year-old Maryland girl, saying there was no blood test preformed to confirm that the girl died of "caffeine toxicity," the Associated Press reports.

The lawsuit was filed last year by the family of Anais Fournier, claiming the girl went into cardiac arrest after consuming two, 24-ounce Monster energy drinks within a 24-hour period.

Monster??s lawyer Daniel Callahan said that the company hired physicians to review medical records and they suggested that Fournier could have died of natural causes brought on by her pre-existing heart conditions. The doctors found no medical evidence for an autopsy report that said "caffeine toxicity" was a factor, he said.

A spokesperson for Maryland??s chief medical examiner did not immediately confirm whether a blood test had been performed to check for caffeine levels. He said the cause of death was "cardiac arrhythmia due to caffeine toxicity complicating mitral valve regurgitation in the setting of Ehler's-Danlos syndrome," which is a heart condition.

Monster also said evidence reveals that Fournier regularly consumed coffee and energy drinks without incident.

Despite recent FDA scrutiny of energy drinks, Monster has stood by the safety of its products, which it says contains 240 milligrams of caffeine per 24-ounce can, compared with 330 milligrams in a 16-ounce cup of Starbucks coffee.