The Santa Clara County Public Health Department document said Jobs had a metastatic pancreas neuroendocrine tumor for the past five years. It listed his immediate cause of death as respiratory
arrest, which means he stopped breathing.
The document also explained Jobs died last Wednesday around 3 p.m. at his home in Palo Alto . He was 56.
AP said no autopsy was performed.
Jobs was buried on Friday in a Palo Alto cemetery.
Apple sent a memo Monday to its employees announcing that it will hold a memorial service for Jobs on Oct. 19 at its Cupertino campus. The service will begin at 10 a.m. and is only open to Apple employees.
The Wall Street Journal obtained the email. Tim Cook said he had "experienced the saddest days of my lifetime and shed many tears" since Jobs' death. Cook said the service would allow "Apple employees to take time to remember the incredible things Steve achieved in his life and the many ways he made our world a better place."