New details have been revealed in a case against a Colorado man who claimed he "accidentally" shot his wife in the chest while "clearing his gun" and then "attempted CPR for about an hour" before calling 911.

David O'Grady, 37, stands accused of one count each of murder in the first degree and domestic violence, according to Arapahoe County Sheriff's Office records, as Law&Crime previously reported .

The underlying incident occurred on the morning of Sept. 7, at the couple's residence on Shawnee Way in Aurora. The shooting took the life of the defendant's wife, 29-year-old Taylor Dawn Last .

Upon his initial arrest, O'Grady said he waited roughly an hour to call for help because of his CPR attempts. Now, however, authorities believe he waited several hours to make that phone call.

But

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