EVN observations of the OH megamaser galaxies Mrk 231 and IC 694

We present EVN observations of hydroxyl (OH) main-line emission in two megamaser sources Mrk 231 and IC 694. The observations indicate that the broad maser emission lines originate within the nuclear regions. A single 1667 MHz main-line feature is seen at the nucleus of IC 694. In Mrk 231 both main-lines were observed in an extended "half-circular" region of 150 pc by 50 pc surrounding the radio nucleus