Matthew Francis was shot Tuesday night at the Garden Oaks Apartments on Royal Palms Street in southeast Houston.
Matthew was found on the ground in a breezeway.
Investigators say there was a fight at the back of the complex and it appears the teen may have been chased by the shooter or shooters as they fired.
A trail of shell casings led police to the middle of the complex.
A woman tried to help Matthew. She put a blanket on him, held his hand and prayed.
"I told him it was going to be alright. That he was going to make it, that God has a special place on Earth for him, but I think I lied," the woman said.
Matthew was taken to Ben Taub Hospital, where he has been since the shooting.
His father says Matthew died around 9 p.m. Thursday.
"What makes it hard on cases like this? People who know who did this will not come forward and talk to us," said HPD Detective Ken Fregia.
Matthew's father says the teen does not live at the apartment complex. He was there visiting a friend.
There are no witnesses to the shooting other than people who heard the gunshots.
Hours earlier, an 18-year-old was shot and killed in a drive-by shooting in southwest Houston. Witnesses said they saw the teen running when someone opened fire.
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