Claire Roscow ’10, an engineering student and former class president, died Dec. 28 in Denver. The cause and manner of her death are under investigation, said a spokesman for the Denver County medical examiner.

Roscow, 22, was the head volunteer coordinator for the Dalai Lama’s visit in October. It was organized in part by the Center for Compassion and Altruism Research and Education, where she worked as an undergraduate fellow. Her leadership was essential to the visit’s success, said Joel Finkelstein, the center’s program coordinator.

He spoke of a “talented and warm and winning” student who came to his office when she heard the center was being organized. She was paid little but shone during her fellowship, earning trust and responsibility from colleagues, he said.

Roscow served a partial term as a president of her class in 2009.

A Facebook group has been organized in her memory. A memorial service is set for Jan. 13 in Lakewood, Colo., according to the group.

–Elizabeth Titus