BRIEF-Russian opposition activist arrested on suspicion of spreading false information about Moscow's military campaign will stay in detention until June 12 -Interfax

April 22 (Reuters) -

* RUSSIAN OPPOSITION ACTIVIST ARRESTED ON SUSPICION OF SPREADING FALSE INFORMATION ABOUT MOSCOW'S MILITARY CAMPAIGN WILL STAY IN DETENTION UNTIL JUNE 12 -INTERFAX Source text for Eikon: Further company coverage: [ ]