Daniel Lee Siebert was an American serial killer on Alabama’s death row. He was convicted of three murders and confessed to at least five. During questioning, he indicated that he was responsible for at least 12 deaths. Take a look below for 26 more interesting and strange facts about Daniel Lee Siebert.

1. Siebert’s first known killing took place in Las Vegas, Nevada.

2. After Siebert’s first killing in Las Vegas, he was convicted of manslaughter.

3. He was charged with the 1985 murders of two women in Los Angeles, California.

4. In 1986, he murdered a student at the Alabama Institute for the Deaf and Blind in Talladega and her two children.

5. Sherri Weathers, his victim, missed classes for over a week, and the school was worried that she had not contacted them with an explanation.

6. When police searched Sherri’s apartment, they found her dead body, along with those of her two children.

7. Further investigation found another student that was missing from the Alabama Institute for the Deaf and Blind. Linda Jarman was also found murdered in her apartment.

8. Siebert was also charged with the murder of Linda Odum, a waitress who he had been dating. She was reported missing in February and her remains were discovered in March.

9. It was fingerprints that linked Siebert to Linda’s stolen car.

10. Police believed that Siebert was also involved in the death of Sheryl Evans of Calhoun County, whose body was found around the same time.

11. Siebert was charged with the death of Beatrice McDougall in Atlantic City, New Jersey, in 1986.

12. While he was in custody, Siebert stated that he had committed 12 or more murders.

13. Siebert was born in Mattoon, Illinois.

14. He joined the U.S. Marines in 1972 under the name Daniel Marlow, and early on, left with a dishonorable discharge.

15. Between 1973 and 1975, Siebert had two children, a girl and a boy.

16. When an art teacher using the name “Daniel Spence” was questioned in connection with the crime, after police were noticed that he had an interest in Sherri Weathers, a check of Spence’s fingerprints found that he was in fact Daniel Siebert.

17. After he was found, Siebert spent the next six months on the run.

18. He was caught in Hurricane Mills, Tennessee, after placing a phone call to a friend who reported him to the police.

19. His next call was traced to a phone booth near a restaurant where he was working and he was arrested the following day when he showed up for work.

20. Siebert’s execution date was set for October 25, 2007, for the murders of Weathers and her children.

21. Assistant Attorney General Clay Crenshaw said that Siebert had exhausted all of his appeals for the killing of Weathers and her children.

22. Siebert challenged Alabama’s method of lethal injection on the grounds that his cancer medication would counteract with the lethal injection drugs and inflict unnecessary pain.

23. His death from pancreatic cancer came less than a week after the U.S. Supreme Court approved the most widely used method of lethal injection, prompting states to move forward with executions after a nearly seven month halt.

24. In December 2007, Siebert was investigated in relation to a recent pornography case. While no action was taken against him or charges filed, a personal correspondent of Daniel’s was charged for multiple sex crimes due to the investigation’s findings.

25. Siebert died on Tuesday, April 22, 2008, from complications from pancreatic cancer.

26. The prison system spokesman Brian Corbett said that Siebert was pronounced dead at 1:35 PM at Holman Correctional Facility near Atmore, where he had been awaiting execution for more than 21 years.