US authorities are probing some 29 letters that have been packed with suspicious white powder.
Strasbourg Mayor pledged to identify those behind it as soon as possible.
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.
Day in Pics: 1st October
Showbiz World - October 1, 2014
George Clooney - Amal Alamuddin grand Venice wedding