Man dies after being stabbed in the back with a hammer

A 22-year-old man has died after he was stabbed in his back with what police believe was a hammer during an argument with his girlfriend, according to police.

He died at a hospital early Sunday, officials said.

The man was with a woman, who was also with the man, when he went to the apartment of the other woman, police said.

He was alone with her and they had been arguing, according the San Antonio Express-News.

The woman called 911 and police arrived and found the man lying on the ground, bleeding from his chest.

She said he was wearing a dark colored sweatshirt and black jeans and that she and the other man had been drinking beer, according a police report.

The police report did not indicate whether the man was wearing gloves or what the two were arguing about.

Police said the woman was not arrested.

Authorities are investigating.

The incident happened early Sunday in the 200 block of South Green Street, according San Antonio police.

Police have not released any other information about the case.