MOSCOW (AP) — Kazakhstan’s Foreign Ministry says it is cooperating with the United States in the case of two of its citizens arrested in connection with the Boston Marathon bombing.

Dias Kadyrbayev and Azamat Tazhayakov were university friends of bombing suspect Dzhokhar Tsarnaev. They were charged Wednesday with attempting to destroy evidence by disposing of a backpack and laptop computer taken from his room after they found he was a suspect in the fatal bombing.