Actor Philip Seymour Hoffman, who was found dead February 2 on the bathroom floor of his New York apartment with a syringe in his left arm, died of acute mixed drug intoxication, including heroin, cocaine, benzodiazepines and amphetamine, the New York medical examiner's office said Friday.

The manner of death was ruled an accident, the medical examiner's office said in a statement.

Dr. Sanjay Gupta, CNN's chief medical correspondent, said that as addicts take mixtures of drugs more chronically, they may not necessarily feel the effects of the narcotics, which still suppress the respiratory system.

"They're not feeling it, but it's still having an impact on their ability to breathe, and that's the real problem," he said. "It's called stacking. You can stack the same drug too close together, or you can start to stack other drugs, one on top of the other. That's how people get into trouble. They do call it accidental death as well."

Police found nearly 50 envelopes branded "Ace of Spades" filled with what they believe was heroin in the actor's Manhattan apartment, two law enforcement sources familiar with the inquiry said.

Used syringes, prescription drugs and empty bags that authorities suspect were used to hold heroin also were found in the apartment where Hoffman, 46, was found dead, sources said.

He was expected to pick up his children that day but didn't show up, the official said. Playwright David Katz and another person went to the apartment and found him dead, the official said.

Police officers found him in a T-shirt and shorts with his eyeglasses still on his head.

What are the answers to this following set of questions:

1. What state medical examiner's office handled the actor's death?
2. What is the actor's first name?
3. And last name?
4. And middle name?
5. Was the actor's death judged to be an accident?
6. Through what means did the medical examiner's office release this information?
7. What was the brand on the envelopes found/
8. What drug was in the envelope?
9. Was Hoffman found dead in a house?
10. In what city was his apartment?
11. How old was he at the time of his death?
12. What is the last name of CNN's medical correspondent?
13. And his first name?
14. What is the last name of the playwright who found his body?
15. Was someone else with Katz?
16. What was Hoffman wearing when found?
17. What did he have on his head?
18. What persons were Hoffman supposed to pick up that day?
19. In which arm of Hoffman's was a syringe found?

Numbered answers:
1. New York
2. Philip
3. Hoffman
4. Seymour
5. yes
6. a statement.
7. "Ace of Spades"
8. heroin
9. no
10. New York
11. 46
12. Gupta
13. Sanjay
14. David Katz
15. yes
16. in a tee shirt and shorts
17. his eyeglasses
18. his children
19. the left