Authorities say that a 56-year-old man killed his neighbors, a family of four, and their two dogs over the weekend before he turned his gun on himself.
According to the Associated Press, the confrontation between the gunman, Michael Guzzo, and his next door neighbors at a townhouse complex in central Phoenix on Saturday may have been sparked by loud barking, say police.
The victims have been identified as Bruce Moore, 66; his daughter, Renee Moore, 36; her husband, who took his wife's name, Michael Moore, 42; and Renee's son, Shannon Moore, 17.
After shooting the Moores and their dogs, Guzzo then walked across the large complex and shot at the door and second floor of another townhouse. KNXV-TV reports the second home belongs to Libni DeLeon who said no one was hurt, but bullet holes are now scattered around his home.
Police said they found a pump shotgun, apparently the weapon used in the killings, next to Guzzo's body. A neighbor said Guzzo, who did not have a violent past, usually kept to himself.
"I've seen him every morning - come in quiet every morning," Donald McKenzie told Phoenix television station KSAZ-TV. "Never would expect him to be the guy who did this at all."
Other neighbors in the family-oriented, 250-unit complex said the shooter often argued with pet owners about barking dogs and left written notes complaining about the noise.
"He didn't want noise," neighbor and dog owner Denise Lopez said. "The dogs were waking him up. He always used to complain."
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