KALAMAZOO, MI - The gun police believe Jason Brian Dalton used in a shooting rampage that left six people dead was registered to him and owned legally, investigators said Tuesday.

Kalamazoo Public Safety Chief Jeff Hadley confirmed Tuesday that the 9 mm semiautomatic handgun police found in Dalton's possession following his arrest Sunday was owned legally.

The information from Hadley came just a few hours after Kalamazoo County Undersheriff Pali Matyas confirmed that Dalton, 45, of Cooper Township, did not have a license to carry a concealed weapon.

The new information released Tuesday answered two of several questions that have swirled since Dalton's arrest for the shooting spree, which also seriously injured two people, including a 14-year-old girl.

Dalton is being held in the Kalamazoo County Jail. He was arraigned Monday on six counts of murder, two counts of assault with intent to commit murder and eight counts of felony firearm use.

Detectives who obtained an arrest warrant for Dalton prior to his arraignment said Dalton admitted to fatally shooting a father and son from Mattawan at 10:08 p.m. in the parking lot of Seelye Automotive on Stadium Drive. He also admitted to being at the scene of a shooting at 10:24 p.m. at a Cracker Barrel restaurant a few miles from there, where four women were killed and a 14-year-old girl was critically injured.

Additionally, detectives said Tiana Carruthers, who was shot multiple times outside The Meadows townhomes on East G Avenue in Richland Township at 5:42 p.m. Saturday, later identified Dalton in a police lineup as the man who shot her.

The detectives' testimony Monday shed no light on why Dalton, who did not have a criminal history, allegedly went on the shooting rampage and Dalton provided no clues when he was in court. Getting also said Monday that investigators do not know Dalton's motive.

After the shooting in Richland Township, the next round of gunfire came after 10 p.m. when police say Dalton shot and killed 17-year-old Tyler Smith, of Mattawan, and Tyler's father, Rich Smith, 53. A little more than 15 minutes later, police say, Dalton shot and killed Mary Lou Nye, 62, of Baroda, and Dorothy "Judy" Brown, 74; Barbara Hawthorne, 68, and Mary Jo Nye, 60 in the Cracker Barrel parking lot.

Abigail Kopf, 14, was also wounded in the shooting at the Cracker Barrel. She was listed in critical condition at Bronson Methodist Hospital in Kalamazoo following the shooting. On Monday, Abigail's parents, Gene and Vicki, said their daughter is "fighting for her life."

Rex Hall Jr. is a reporter for MLive.com. You can reach him at rhall2@mlive.com. Follow him on Twitter.