Metro police are continuing to investigate a shooting that occurred Tuesday morning at a home in north Nashville that left two men injured and one in police custody.The shooting occurred before 10 a.m. in the 1600 block of 14th Avenue North near Wheless Street.A woman who lives in the home told Nashville's News 2 her husband was shot by a man who came to the door demanding money. "I just woke up to the guy flinging the gun around saying 'Gimme the money! Gimme the money!' I grabbed my daughter and threw her behind me and he was just shooting," the homeowner recalled. The woman said six children were in the house at the time. No one else was injured.Metro police identified the victim as 32-year-old Marlin Williamson. Doctors at Vanderbilt University Medical Center removed a bullet from his neck. His injuries are not believed to be life-threatening.A few minutes later, a vehicle linked to the shooting was spotted driving erratically near the intersection of Fourth Avenue North and James Robertson Parkway near the Municipal Auditorium downtown.The car was pulled over at the intersection of Fifth Avenue North and Gay Street, about a block away. Police found 28-year-old Jason Diehl with a gunshot wound in his back. It remains unclear who fired shots at him. Diehl was also taken to Vanderbilt University Medical Center in stable condition. Investigators determined Diehl was the man who opened fire on Williamson. Police also recovered a gun inside his vehicle. Diehl was taken into police custody and is charged with especially aggravated robbery. Williamson's wife told Nashville's News 2 Diehl had come to their house Monday night to talk with her husband. "The guy came in sometime in the afternoon and was talking about having a pawn shop robbery and he was trying to sell gun," she said. "My husband knows I don't allow guns in the house so he said 'I'll check around to see if anyone wants one" she said. The car Diehl was driving had a shattered front passenger window and there were shards of glass in front of Williamson's house. Metro police said Tuesday afternoon that Williamson denies firing back at Diehl.