LAMOINE — Maine State Police said Monday that it will take more time for detectives to figure out who pulled the trigger during a confrontation early Sunday that left one man dead and three wounded.

Detectives found a gun and identified all of the participants but were unsure what led up to the shootings outside a house in Lamoine, said Stephen McCausland, spokesman for the Department of Public Safety.

“There was a confrontation in the front yard that involved gunfire. What we’re trying to do is to piece together exactly what happened,” he said.

Lawrence “Randy” Sinclair, 32, of Ellsworth died from a single gunshot wound to the head, the state Medical Examiner’s Office said Monday. A second victim, Torrey Garland, 34, of Ellsworth, remained hospitalized Monday with life-threatening injuries.

The shootings happened outside the house where Michael Carter, 30, was living with Tacy Mullins, 22.

Emergency responders were alerted when a woman called from the home to request medical assistance at 4:30 a.m. Sunday.

A neighbor across the street said he heard 10 gunshots.

“This is crazy,” the neighbor, Harold Pottle, told WLBZ-TV.

Sinclair died at Eastern Maine Medical Center in Bangor several hours after the shootings.

Carter also was shot, as was Joshua McKinney, 35, of Ellsworth. Their injuries weren’t considered life-threatening, police said.

On Monday, investigators continued to work outside the home, where evidence technicians placed yellow tags on the ground and on the steps leading into the house. A gun was recovered from the scene, said Maine State Police Lt. Christopher Coleman.

Detectives must interview more witnesses, including Garland, said Coleman. “Our goal is to get to the bottom of who shot who,” he told reporters at the scene.

Police were looking into a report that Sinclair crashed his vehicle Saturday a half-mile north of the site of the shootings, McCausland said. It’s unclear whether the accident was linked to the shootings.