PRAGUE (AP) — A number of comments by Americans on social media mistaking the Czech Republic for the country of origin of the Boston Marathon bombing suspects— ethnic Chechen brothers — prompted the Czech ambassador to the United States to act.

In a statement posted on the embassy Web site, Petr Gandalovic said "the Czech Republic and Chechnya are two very different entities — the Czech Republic is a Central European country; Chechnya is a part of the Russian Federation."

Gandalovic calls it "a most unfortunate misunderstanding," but some responses on Twitter are less diplomatic.

Mirca Sekerova recommends Americans "open a geography book once in a while...stop blaming our country for this."

And Petr Manda commented: "Well done, U.S. education system."