Excerpt:
Some mosques in Moscow are selling extremist literature, Muhammedgali Khuzin, a Perm region mufti, told Interfax-Religion.
"Extremist literature printed by various militants and Caucasian groups can be bought freely in a couple of local mosques. We visited Moscow not long ago and saw it," the mufti said.
He welcomed a "black list" of extremist literature banned in Russia, Khuzin said.