BERKELEY (CBS SF) – A Berkeley couple who were found dead in their apartment on Monday afternoon were identified Tuesday, but what killed them remains a mystery.

Berkeley police spokesman Officer Byron White said 35-year-old Roger Morash and his wife, 32-year-old Valerie Morash, were found dead together in their apartment in the 3000 block of Deakin Street. The couple’s two cats were dead as well.

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No cause of death was immediately clear. Police evacuated the apartment building and called in PG&E and the fire department’s hazardous materials team to look for a gas leak or some other hazard but no contaminant was found.

Police don’t suspect foul play but still haven’t determined what killed the couple. A report from the Alameda County coroner’s bureau could take weeks.

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“Until we get the coroner’s report, we really won’t know what caused their deaths,” White said. “It truly is a mystery at this point.”

Roger Morash was a game developer working on an adventure game called Shard. Valerie Morash was a postdoctoral research fellow at the Smith-Kettlewell Eye Research Institute in San Francisco.

They both attended the Massachusetts Institute of Technology.

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