A decorated Marine veteran charged with firing an assault rifle from a boat at a waterfront bar in North Carolina, killing three people and wounding five, appeared subdued in court Monday as prosecutors said they may seek the death penalty.

Nigel Edge, 40, a Purple Heart recipient whose last assignment was with a Wounded Warrior battalion, made his first court appearance via video link after Saturday's mass shooting. He's charged with murder, attempted murder and assault.

Law enforcement officers “got the confession” from the suspect following his arrest, said North Carolina State Bureau of Investigation Director Chip Hawley at a news conference Monday. He did not elaborate.

GRAND BLANC TOWNSHIP, Mich. — An ex-Marine smashed a pickup into a Church of Jesus Christ of Latter-day Saints church in Michigan, opened fire and set the building ablaze during a crowded Sunday service and then was fatally shot by police. At least four people were killed and eight wounded, and authorities were searching the building ruins for more victims.

The attack occurred about 10:25 a.m. while hundreds of people were in the building in Grand Blanc Township, outside Flint.

The man got out of the pickup with two American flags raised in the truck bed and started shooting, Police Chief William Renye told reporters. The attacker apparently used gas to start the fire and also had explosive devices but it wasn’t clear if he used them, said James Dier of the Bureau of Alcohol, Tobacco, Firearms and Explosives.

Authorities identified the shooter as Thomas Jacob Sanford, 40, of the neighboring small town of Burton. The FBI is leading the investigation and considered it an “act of targeted violence,” said Ruben Coleman, a special agent in charge for the bureau.

Officers responding to a 911 call were at the church within 30 seconds, Renye said. After the suspect left the church, two officers pursued him and “engaged in gunfire,” killing him about eight minutes later, the chief said.