Officials in Kazakhstan announced on Sunday the arrest of a relative of ex-ruler Nursultan Nazarbayev, in the first known investigation targeting the once-powerful ruling family since bloody political violence in January. Kazakhstan’s anti-corruption agency said in a statement on its official Telegram channel that businessman and reputed power-broker Kairat Satybaldy had been detained on suspicion of embezzling money from the country’s top telecoms operator and was under investigation for “other crimes breaching the security of the state”. Satybaldy, one of Kazakhstan’s most influential figure…