He died of a heart attack when only 55 years old.

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

My father died of a heart attack some years ago.

Many people only find out when they have a heart attack.

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

The cause of death was a heart attack, his family said.

My father had a heart attack when he was pretty young.

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

They got no idea why I had a heart attack.

Just as he had been after the first heart attack, his face was turned to the window.