"As far as I know, the first discussions on the creation of such a task group have begun in the government and the institutions have started a dialogue," the minister told reporters when asked if Lithuania had started formal steps to take Lukashenko to an international court.
"I underline that this is a task group that will look into how the process should be further developed," he said. "We are not yet talking about a petition, but about assessing the possibility of such a petition."
When asked if he himself saw grounds for doing so, Lithuania's top diplomat said, "Politically, yes, but that is for the lawyers to say".
When asked for what specific actions Lukashenko could be taken to court, Landsbergis said that it was a premature question.
"I know that the discussions have only just started. All possibilities will be assessed by professionals with the help of international experts," he said, confirming that possible evidence in the case is being legally documented.
In a statement to EU and NATO leaders issued a couple of weeks ago, chairpersons of parliamentary committees of Lithuania and 16 other European countries called for initiating an international court process against Lukashenko.
They suggested taking Belarus to the International Court of Justice for alleged violations by the Minsk regime of international conventions against torture and other cruel, inhuman or degrading treatment or punishment.
Lithuania began to see a surge in illegal crossings from Belarus in the summer. A total of over 4,200 irregular migrants have crossed into the country illegally so far this year.
Some 7,400 people have been turned away since early August when border guards were given the right not to allow foreign nationals trying to enter Lithuania at non-designated places.
Vilnius accuses the Minsk regime of orchestrating the unprecedented migration influx, calling it "hybrid aggression".
In mid-November, Lithuania declared a one-month state of emergency on its frontier with Belarus after thousands of migrants gathered on the Belarus side of the border with Poland and made attempts to force their way into the EU.