A few months later, his father died of a heart attack.

My father died of a heart attack some years ago.

He died of a heart attack on May 29, 2000.

Exactly one year later, his father died of a heart attack.

She had died of a heart attack only a year before.

Her father died of a heart attack when she was young.

He died of a heart attack on May 13, 1978.

A few weeks ago, he died of a heart attack at age 51.

He died of a heart attack, a family member said.

Her son John died of a heart attack two years ago.