11.   His family did not specify the cause of death.

12.   Hospital officials did not specify the cause of death, but newspapers said it was liver cancer.

13.   It did not specify the cause and the report could not be independently verified.

14.   The company said he suffered from an extended illness but did not specify the cause of death.

15.   The company said he had suffered from an extended illness but did not specify the cause of death.

16.   The hospital did not specify the cause of death, saying only that he died of injuries sustained in the demonstration.

17.   The report did not specify the cause of the accident.

18.   The reports did not specify the cause of death.

19.   They did not specify the cause of the delay.