"The application ... of measures of physical coercion by Czech police, removing the diplomat's diplomatic ID card, and preventing him from getting in touch with a Russian consular official are contrary to generally adopted international norms," the Russian foreign ministry said in a statement posted on its official website.
"In this connection our embassy in Prague has asked the Ministry of Foreign Affairs of the Czech Republic for appropriate explanations," the ministry said.
The ministry also criticized several Russian media outlets that "uncritically" reprinted allegations about the incident last week, which involved the Russian military attache in the Czech republic.
Popular Czech daily Mlada fronta Dnes wrote on April 14 that Colonel Alexander Sketin attacked a police patrol after allegedly failing to obtain information about the past of the director of the National Institute for Nuclear, Chemical and Biological Protection Stanislav Bradka during a dinner in the Czech town of Pribram.
Bradka used to be a healthcare worker at Chernobyl nuclear power plant.
British newspaper The Daily Telegraph published an article in April about an alleged Russian military intelligence network in the Czech republic. The daily referred to a secret report of the Czech government that said roughly half the 63 officials at the Russian embassy in Prague were involved in spying.
