Austin Police Cold Case Detective Daniel Jackson speaks during a news conference regarding a breakthrough in the 1991 "I Can't Believe It's Yogurt" murder case Monday in Austin, Texas. (AP Photo/Eric Gay) Eric Gay/AP Austin, Texas AP —

Two days after four teenage girls were found murdered in a burning Austin yogurt shop in 1991, a man with a pistol in a stolen car was arrested at a border checkpoint west of El Paso.

Nearly 34 years later, cold case detectives have now connected that man and the weapon to the horrific killings that stunned Texas’ capital city. The case frustrated investigators for decades and previously led to the convictions of two men who were sent to prison, one of them to death row.

Investigators on Monday outlined how advanced DNA testing technology and a

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