Florida ? A man accused of making more than $7 billion off the investment schemes of jailed financial manager Bernard Madoff drowned after having a heart attack, authorities said Monday.

Jeffry Picower, 67, was found around noon Sunday by his wife, Barbara, at the bottom of a pool at their oceanside mansion.

“He’s at the bottom of the pool. It’s too deep. I can’t get him out,” she cried hysterically on the 911 call. “He must have collapsed … I can’t get him out … I don’t know how long he’s been there.”

She eventually pulled him from the water with help from a housekeeper. He died a short time later at a nearby hospital.

An autopsy conducted Monday found he suffered a heart attack and drowned. The death has been ruled accidental, and the heart attack was brought on by heart disease. Toxicology tests are pending.

Picower had been accused by Madoff investors of being the biggest beneficiary of Madoff’s schemes. In a lawsuit to recover Madoff’s assets, trustee Irving Picard demanded Picower return more than $7 billion in bogus profits.