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Brittany Munoz Murder Verdict: Garrett Gower Guilty of Killing Pregnant 16-Year-Old Girlfriend

DENTON, Texas (CBS/AP) A Texas jury convicted Garrett Gower of Fort Worth of capital murder in the November 2009 killing of his pregnant 16-year-old girlfriend, Brittany Munoz.

According to The Dallas Morning News, the jury deliberated only 90 minutes.

A judge in Denton, about 50 miles northwest of Dallas, then sentenced 21-year-old Garrett Gower to an automatic life prison term Wednesday. Prosecutors did not seek the death penalty.

Investigators say Brittany Munoz was about six weeks pregnant when she was slain. A medical examiner ruled that the cause of death was suffocation.

Prosecutors say Gower attacked Munoz when she had threatened to tell his mother that she was expecting the couple's child. On Nov. 10, 2009, police found Brittany's body in the apartment she shared with her mother and sister.

According to the Dallas Morning News, prosecutor Ryan Calvert described Gower, now 21, as an "angry boyfriend whose world was collapsing around him" in his opening statements.

Calvert said Gower was afraid his mother would kick him out of the house if she found out about Brittany's pregnancy.

The arrest warrant affidavit for Gower, obtained by CBS affiliate KTVT, says Munoz suffered blunt-force trauma to her head. According to the document, she was found on her bed and shards of glass were found under her body and around the bed. It also says her left eye was black and blue.