NASHVILLE, TENNESSEE -- Metro police say a 22-year-old Madison man who was gravely wounded Tuesday might have been shot by a roommate who was firing at two armed intruders who stormed their residence.

John Craig Mangrum, who was shot in the head and back, died at Vanderbilt University Medical Center last night, according to police and hospital officials.

The shooting occurred at a residence at 200 McArthur Drive.

" Gunfire meant for the intruders may have hit Mangrum," said Metro police spokesman Don Aaron.

Police yesterday morning identified Hosea James Brown Jr., 31, of La Vergne, as one of the suspects in the robbery after he sought treatment at a Smyrna hospital for a gunshot wound to the hand. Police said Brown was shot by Mangrum's roommate.

Brown was taken to Metro General Hospital for treatment. He will be charged with two counts of aggravated robbery and one count of especially aggravated robbery when he is released.

Another suspect is still at large.

Police gave this account of the incident:

Brown and another man, who remains unidentified, came in through the unlocked front door of the house just before 6:30 p.m. At least one of them was armed with a rifle or shotgun.

Mangrum and his two roommates, Corey Lee Jackson, 22, and Brooke Michele Slackta, 19, were in the house.

Jackson told police he grabbed a .45-caliber semi-automatic pistol when he heard the men make robbery demands. Slackta slipped out the back door and ran to a neighbor's house to call 911.

Jackson fired his pistol and one man ran out the front door, police said.

The other intruder was confronting Mangrum in the kitchen and Jackson fired at him.

The suspect fled through the back of the house, but Jackson continued to fire at him as he was running. Police said when Jackson returned to the kitchen he realized Mangrum had been shot.

No charges have been placed against Jackson.

Police said the incident is drug-related.

"Some of the occupants inside the house were apparently involved in illegal drug trafficking," said Metro homicide Lt. Randy Alexander, declining to identify a drug.

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