A confusing situation Saturday near Wasilla began when a couple reported a home invasion by armed individuals and ended with the man shot in the elbow, Alaska State Troopers said Sunday.

But who shot the man and whether any outsiders in fact tried to break into the couple's home on Wolverine Avenue near Bogard Road remain open questions.

As the situation developed, a trooper fired one round but it's not yet known if that's what hit the man, troopers said.

"There's a lot of pieces to put together here," trooper spokeswoman Beth Ipsen said.

Here's what troopers know so far:

Dispatchers received an initial 911 call just after 12:30 p.m. Saturday from Russell W. Tanner, 56. Both he and a 53-year-old woman told dispatchers of armed intruders, said trooper Capt. Hans Brinke, who commands the Mat-Su trooper detachment.

When patrol troopers got to the residence, they heard shots fired inside. Within an hour of the initial call, they saw a man -- later determined to be Tanner -- leap from a second-story balcony with a firearm. At some point, a trooper fired a round.

Troopers and medics took Tanner to the Mat-Su Regional Medical Center, where he was treated and released for a gunshot wound to the elbow. He then was jailed on one count of misdemeanor weapons misconduct. Troopers say he was in possession of a firearm while under the influence but haven't released any details.

A woman in the house, Karen Walters, 53, also exited the house and was taken to the hospital, where she was treated and released for an undisclosed medical condition, Brinke said. He said he didn't know the relationship between Tanner and Walters but said it appears that they both live in the house. A Web post by troopers about the incident described the woman as Tanner's wife but didn't name her. Brinke said he didn't know if she just walked out the front door or if she got out another way.

Troopers, including members of a Special Emergency Reaction Team -- the trooper version of a SWAT team, -- surrounded the home. Troopers had to make sure the residence was secure and didn't get in to sweep it until about 4:30 p.m., Ipsen said. Inside, troopers found firearms and evidence that shots had been fired. But they didn't find any signs of intruders or a home invasion, troopers said.

"At this time it is still unclear whether the injury to Tanner occurred within the home, or outside of the home when the state trooper fired," troopers said in an on-line post about the incident.

The Alaska Bureau of Investigation is investigating. Its report will be routed to the Office of Special Prosecutions and Appeals.