umrzeć we śnie

Less than an hour later, my father died in his sleep.

She died in her sleep at the home of a friend.

Five days after the end of the case, he died in his sleep.

Just hours after the performance, he died in his sleep at a friend's house.

If they had, he might have died in his sleep.

He died in his sleep the night after I left.

Last year, she died in her sleep at the house.

My mother was 82 when she died at home in her sleep.

He died in his sleep, at the age of 90.

Some of the men died in their sleep soon after.