This July 27, 2018 photo provided by the Nevada Department of Corrections shows Christopher Ewing, an inmate at the Northern Nevada Correctional Center. Ewing is serving a sentence for attempted murder and other crimes. Ewing who was convicted of attacking a couple with an ax handle in their bedroom is being charged with killing four people with a hammer in suburban Denver over 30 years ago, authorities announced Friday, Aug.10, 2018. (Nevada Department of Corrections via AP) 
This March 29, 2008 photo provided by the Nevada Department of Corrections shows Christopher Ewing, an inmate at the Northern Nevada Correctional Center. He is serving a sentence for attempted murder and other crimes. Ewing convicted of attacking a couple with an ax handle in their bedroom is being charged with killing four people with a hammer in suburban Denver over 30 years ago, authorities announced Friday, Aug.10, 2018. (Nevada Department of Corrections via AP) 
A family portrait of Bruce Bennett and his wife Debra who were murdered in 1984 along with their daughter Melissa, 7, their daughter Vanessa, who was 3 years old at the time survived the attack.
DENVER | Prosecutors have formally charged a Nevada convict accused of killing a woman with a hammer in Aurora more than three decades ago, and charges in a separate attack that left three others dead are expected soon.
KUSA-TV reported Monday that Alexander Christopher Ewing has been charged in Jefferson County with first-degree murder in the January 1984 attack on 50-year-old Pamela Louise Smith in Lakewood.
Ewing also is suspected in a June 1984 attack in Aurora that killed Bruce and Debra Bennett and their 7-year-old daughter, Melissa. Arapahoe County prosecutors have yet to file formal charges in that case.
Ewing is serving time for attacking a couple with an ax handle near Las Vegas in 1984 after escaping from deputies in an Arizona case.
Investigators say DNA evidence tied him to the Colorado attacks.
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Information from: KUSA-TV, https://www.9news.com
