Two US women who were hospitalized in Moscow for suspected thallium poisoning flew home to the United States as colleagues and relatives struggled to understand how the two were exposed to a potentially fatal chemical.
Dr. Marina Kovalevsky, 49, and her daughter, Yana, 26, arrived at Los Angeles International Airport aboard an Aeroflot flight Wednesday and were taken in wheelchairs past news media to two waiting ambulances.
In Moscow, a US Embassy spokesman said Russian officials were investigating how and when the women could have come into contact with poison.
Moscow police declined to comment, but the Ekho Moskvy radio reported authorities were checking cafes and restaurants in the area of the hotel where the women stayed.
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