He was very attentive. We taught him about the gun and ammunition. He felt a bunch of guns,” said Doetzer, who said the Glock “is pretty much the most popular gun in the country right now.”
Doetzer said his store, which opened about two years ago, sells a range of weapons and that he encourages buyers to get “whatever feels best in your hand.”
For Springer, that was the Glock. Doetzer said Springer passed a background check, bought a box of hollow-point cartridges and left.
Springer graduated from Carnegie Mellon University in 2007 and worked as an information technology support associate at the university's Software and Engineering Institute.
Chaihirunkarn was a doctoral student at CMU's School of Computer Science, according to a message sent to university employees and students.
“Out of respect to the families, we are providing no further information about their passing,” Gina Casalegno, the university's dean of student affairs, said in a statement.
Friends of the couple, who were in Chaihirunkarn's office Friday and asked not to be identified, said she was from Thailand and planned to return there to teach after finishing her Ph.D.
Friends told police that the couple had a “troubled” relationship, but there was no evidence of a struggle at the crime scene, Brackney said.
Police went to the apartment after the building's property manager asked officers to check on Chaihirunkarn's well-being. Police said a friend told the property manager that Chaihirunkarn had not been seen for a few days.
Tony Raap is a staff writer for Trib Total Media. He can be reached at 412-320-7827 or
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