Gentvilas received the port's demand to pay the amount back in September, 2016.
The lawsuit was filed to Klaipėda Regional Court, the port's authority said. The 1.9 million euros include the fines, interests and legal costs the port was ordered by court to pay to contractors.
The damage was caused by improper implementation of the contract the port's authority, then led by Gentvilas, had signed with Lithuania's Klaipėdos Hidrotechnika, Austria's Strabag Wasserbau and Denmark's Rohde Nielsen.
Gentvilas said back in September, 2016 that the contract with Klaipėdos Hidrotechnika was terminated due to objective reasons after the company filed bankruptcy, its accounts were frozen and bailiffs banned the port to make payments. Moreover, Klaipėdos Hidrotechnika owed the port 9 million litas (2.6 million euros), which the port failed to recoup due the company's bankruptcy.
Gentvilas led the Port of Klaipėda from June, 2009 to November, 2012 when he was elected into the Seimas.
In September, 2015, the Court of Appeal ruled that the embankment construction contract with Klaipėdos Hidrotechnika, Strabag Wasserbau and Rohde Nielsen was terminated due to the port authority's fault and ordered the port to pay over 1.9 million euros to the companies.
Klaipėdos Hidrotechnika and Strabag Wasserbau had demanded over 6.26 million euros.