Initial reports coming out of Russia suggest that Kuksenkov's absence from today's event finals at Russian nationals were the result of his withdrawal on the basis of a positive drugs test taken on 15th March.
Valentina Rodionenko says the test showed a 'minimal' measure and stresses that gymnasts stopped taking Mildronate last August. Investigations are taking place to understand how long the substance can remain the bloodstream after withdrawal.
This is obviously disappointing for the gymnast, coaches and the wider team. We wait to hear more and to consider the implications.
Update 3/4 - WADA conducting research into the rate of excretion of meldonium. Decisions about athletes' guilt are pending. http://www.sports.ru/biathlon/1038710792.html