(CNN)A Georgia police chief who said he accidentally shot and seriously injured his wife while the couple were sleeping in bed has resigned, the Peachtree City Police Department said Wednesday. 

William McCollom stepped down as chief of police in Peachtree City nearly a week after a prosecutor announced that although the New Year's Day shooting appeared accidental, McCollom could eventually face a misdemeanor charge accusing him of recklessly taking a gun to bed after drinking alcohol and taking sleeping medication. 

The shooting in Peachtree City, an upscale community of 35,000 people south of Atlanta, left Margaret McCollom paralyzed below the waist. 

"I have had had two families in Peachtree City -- my police family and my personal family. In light of the recent tragedy in my personal family, I need to continue to focus my time and efforts there," William McCollom said in a message posted Wednesday on the police department's Facebook page. 

Medics and police rushed to the McColloms' home early on January 1 after the chief called 911 to say he accidentally shot his wife as both were sleeping -- by inadvertently moving a gun that he had taken to bed with him. 

"The gun was in the bed, I went to move it, put it to the side, and it went off," McCollom says in a recording of the 911 call. 

Later in the call, the operator asked McCollom, "Were you asleep also when this happened?" 

"Yes," the chief, 57 at the time, replied. 

Last week, Scott Ballard, district attorney for a several-county area that includes Peachtree City, said a Georgia Bureau of Investigation probe found the following:  QUESTIONS:

Q1:
1. Who did William McCollom shoot by accident?
2. Who did William McCollom accidentally fire upon?
3. Who did the police chief accidentally shoot?
Q2:
1. Who was the police chief?
2. What was the police chief's name?
3. Who accidentally shot his own wife?
Q3:
1. What was William McCollom's occupation?
2. What did William McCollom do for a living?
3. How was William McCollom employed?
Q4:
1. Where did William McCollom work?
2. What state was William McCollom's place of employment?
3. What state was William McCollom a police chief in?
Q5:
1. What city was William McCollom police chief of?
2. Where did William McCollom serve as police chief?
3. What city was William McCollom's post of police chief in?
Q6:
1. Did William McCollom step down?
2. Did William McCollom agree to leave his job?
3. Did William McCollom quit his job?
Q7:
1. When did William McCollom step down?
2. When did William McCollom agree to leave his job?
3. When did William McCollom announce he would no longer be police chief?
Q8:
1. Did William McCollom shoot his wife on accident?
2. Was it not on purpose when William McCollom shot his wife?
3. Did William McCollom fire at his wife by mistake?
Q9:
1. How many people live in Peachtree?
2. What is the population of Peachtree?
3. What is the number of residents within Peachtree?
Q10:
1. Where is Peachtree in reference to Atlanta?
2. What is Peachtree's location with respect to Atlanta?
3. Where can Peachtree be found with Atlanta as a point of reference?
Q11:
1. When did William McCollom make his announcement?
2. When did William McCollom say he was stepping down?
3. On what day of the week did William McCollom post his message?
Q12:
1. Where did William McCollom make his announcement?
2. On what platform did William McCollom make his announcement?
3. What medium did William McCollom use to announce he was stepping down?
Q13:
1. What Facebook page did William McCollom post to?
2. On what Facebook page did William McCollom's message appear?
3. Which Facebook page did William McCollom write his message on?
