KITV4 News has uncovered new details about the events that happened before the fatal shooting of a Kailua man early Saturday morning in Waikiki.

Police have charged an off-duty federal security agent who was in town for the Asia-Pacific Economic Cooperation conference with the crime.

There is surveillance video of the incident from inside the Kuhio Avenue McDonald's in Waikiki, police sources said. Detectives reviewed the video before charging Christopher Deedy, 27, a diplomatic security agent, with second-degree murder, sources said.

Deedy claimed the man he's charged with shooting and killing, 23-year-old Kollin Elderts of Kailua, was drunk and disorderly at the Waikiki McDonald's just before 3 a.m. Saturday, a source who'd been briefed on the investigation said.

Deedy claimed Elderts was bothering other patrons, so Deedy stepped in and told him to quiet down, the source said.

That led to a verbal argument which escalated into a physical fight that ended with Deedy shooting and killing Elderts, the source said.

Elderts' family attorney said Deedy was drunk.

"What the witnesses say is that at one point, the agent, who apparently appeared very intoxicated, asked my client if he'd like to get shot," said Michael Green, who?s representing the Elderts family.

Deedy refused to take a blood alcohol test, sources said.

Police said they can only force blood alcohol tests on drivers who've been involved in auto crashes that caused injuries.