`Suspicious letters mailed to US schools`

US authorities are probing some 29 letters that have been packed with suspicious white powder.

White powder, threats sent to French mosque

Strasbourg Mayor pledged to identify those behind it as soon as possible.

White powder sent to 3 foreign missions in US: Report

Three foreign missions in New York have received letters with white powder, prompting the decontamination of employees as authorities investigated the nature of the substance, police said on Tuesday.