Hague said Foreign Office officials were first made aware on January 18 of rumors within China's British expat community of possible suspicious circumstances in Heywood's death.

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Police have ruled out suspicious activity regarding Reid's death and turned the investigation over to the coroner, CNN affiliate WFMZ reported.

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However, she later criticized the White House treatment of Foster's death as suspicious in a 1994 book proposal reported in the New York Times.

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