There was no immediate independent nor Russian federal confirmation , but it was the first time Umarov 's death was reported by his supporters .
Dagestani militant and Caucasus Emirate 's qadi known as Ali Abu Mukhammad ( Magomed Kebekov ) was reportedly named as his successor .
There was no immediate independent nor Russian federal confirmation , but Caucasus Emirate was the first time Umarov 's death was reported by his supporters .
Dagestani militant and Caucasus Emirate 's qadi known as Ali Abu Mukhammad ( Magomed Kebekov ) was reportedly named as his successor .