Professor shot dead on University of Arizona campus; former student in custody

A professor was shot and killed on the University of Arizona campus in Tucson on Wednesday afternoon, allegedly by a former student, campus police said.

The suspect, Murad Dervish, 46, was taken into custody hours later following a traffic stop by the state’s Department of Public Safety near the town of Gila Bend, University of Arizona Police Chief Paula Balafas said at a news conference.

Police said the suspect used a handgun.

The victim was identified Thursday as professor Thomas Meixner, department head of the Department of Hydrology and Atmospheric Sciences, said university president Robert Robbins.

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"This incident is a deep shock to our community, and it is a tragedy. I have no words that can undo it, but I grieve with you for the loss, and I am pained especially for Tom’s family members, colleagues and students," Robbins said.

ABC News' Marilyn Heck and Teddy Grant contributed to this report.

Professor shot dead on University of Arizona campus; former student in custody originally appeared on abcnews.go.com