According to a Russian Naval Commander ... the craft was apparently caught, accidently, withing (?) the sweep patterns of ship mounted search radars, which came on to track it’s progress, causing some sort of malfunction which resulted in the crash.Doubtful, comrade, HIGHLY doubtful.
Also - which 'type' of RADAR was active: a 'tracking RADAR' or a 'search RADAR'? There *two* operate, 'sweep' (literally: sweep the skies) and 'view targets' entirely differently ...