This was announced on his Twitter page by his spokesman Aidos Ukibay.

“Nursultan Nazarbayev arrived on a working visit to the Russian Federation,” he wrote.

Nursultan Nazarbayev arrived on a working visit to the Russian Federation pic.twitter.com/AqJu6yxRON

- Aidos Ukibay (@Aidos_Ukibay) September 6, 2019

According to Ukibay, during the visit, Nazarbayev will meet with Russian President Vladimir Putin, visit the Kazakhstan national pavilion at VDNKh and take part in celebrations on the occasion of City Day in Moscow.