Disgruntled lab worker arrested in murder of neuropathologist Roger Brumback and three others

I had reported in May of this year on the tragic death of Dr Roger Brumback. Here is a follow-up on the case from CNN:

updated 8:34 PM EDT, Mon July 15, 2013

(CNN) -- Police arrested a former Creighton University lab worker Monday for two double homicides over five years, both sets of victims were connected to the pathology department at the Nebraska school.

Anthony Joseph Garcia, 40, was arrested during a traffic stop in Illinois, Omaha Police Chief Todd Schmaderer said. Officers were making preparations to arrest him Tuesday, but the Indiana resident "became mobile" and police felt they needed to arrest him right away, he said.

Garcia was arrested on four counts of first-degree murder in the May deaths of Roger and Mary Brumback, both 65, and the March 2008 deaths of 11-year-old Thomas Hunter and his family's housekeeper, Shirlee Sherman.

All lived in Omaha.

Roger Brumback was a professor in the pathology and neurology departments at Creighton and announced his retirement shortly before he was killed.

Thomas Hunter's father, Dr. William Hunter, is a faculty member in Creighton's 12-person pathology department. The boy's mother, Dr. Claire Hunter, is an associate professor in Creighton's cardiology division.

Garcia worked in the pathology lab from July 2000 until June 2001, when the Brumbacks and William Hunter fired him, said Omaha Police Officer Michael Pecha. CNN affiliate KETV said Garcia was fired for "erratic behavior."

An Omaha task force had been monitoring Garcia "for some time," Schmaderer said. He was pulled over for suspected alcohol impairment and was found with a .45 handgun.

Authorities believe Garcia acted alone, Schmaderer said.

It's not clear where Garcia was working at the time of his arrest.