Here is a good article (in Russian) that reconstructs the sequence of the events in 1990 and talks about the economic blockade of Lithuania by the Soviet Union some 25 years ago.
To put it in the perspective - I guess it is like the US imposing an economic blockade on New Hampshire. "Live Free or Die".
I do still remember those events vividly, here is my earlier post.
Here is a very interesting discussion with V. Landsbergis.