Russia's counter-terrorism agency says it killed two militants it believes were planning a terrorist act in Moscow and detained a third.

The National Anti-Terrorist Committee said Monday in a statement that one of its special forces was lightly wounded in the operation in the Moscow suburb of Orekhovo-Zuevo.

It said the militants were Russian citizens who had received training in Pakistan.

It was not clear when the operation took place and no further information was immediately available.

Russian special forces regularly announce that they have thwarted terrorist attacks, most often in the Caucasus region of southern Russia.

The last major terrorist attack in Moscow was a suicide bombing at the Domodedovo international airport in January 2011 that left 37 people dead.