In 1978, at the age of 69, Sabbe was found near his birthplace of Paidra, Lasva Parish in southeastern Estonia by two KGB agents posing as fishermen.
[1] When they attempted to arrest him, he leaped into the Võhandu River and either drowned accidentally or deliberately wedged himself under a submerged log.
But some[2] have observed that the river is narrow, sluggish and shallow at that point, an unlikely place for an accidental drowning, and that the open field on the opposite bank and the river's lazy loops gave an elderly man no place to flee from two young, physically fit pursuers.
A stone monument to Sabbe stands in a pine grove overlooking the site of his death.
It is located just west of Route 65 between Leevi and Tsolgo, almost exactly on the boundary between Põlva and Võru counties.