Asked whether the Baltic country would expel Russian diplomats, he said: "Lithuania will announce today national measures, including what you mentioned but not only that".
On Monday, the United States expelled 60 Russian diplomats over the double-agent Skripal's poisoning in the UK.
The United States, Canada, Ukraine and countries across the European Union banished Russian embassy staff in the biggest wave of collective expulsions in history. "The United States stands ready to cooperate to build a better relationship with Russia, but this can only happen with a change in the Russian government's behavior". Russia, on the other hand, vowed to react to "provocative" expulsions of diplomats.
"They hide behind the veneer of diplomatic immunity while actively engaging in intelligence operations that undermine the country in which they are hosted in a democracy they seek to minimize", an official said. The two remain in critical condition and unconscious.
The EU recalled its ambassador to Moscow last week.
Poroshenko said that "Russia had once again confirmed its dismissive attitude not only to the sovereignty of independent states, but also to the value of human life".
Trump defends $1.3 trillion spending plan, points to military gains
It was far short of the $25bn the White House had sought - and there are strings attached to the funding Congress has approved. Trump is a unsafe , seriously flawed old man whose defects have been with him, I suspect, since childhood.
Trump has also ordered the closure of the consulate in Seattle, which officials said was the focus of spying efforts against the nearby Kitsap submarine base and Boeing.
British officials identified the chemical as Novichok, a nerve agent developed by Russian Federation during the Cold War.
A general view of the exterior of the Consulate-General of the Russian Federation in Manhattan in New York City, March 26, 2018.
Moscow will expel at least 60 U.S. diplomats in response to Washington's move which it linked to double agent Skripal's poisoning, Senator Vladimir Dzhabarov said.
European Union member states agreed on Friday to take additional punitive measures against Russian Federation over the attack on Skripal, found slumped on a bench with his daughter in the southern English city of Salisbury. "Naturally, such a hostile move on part of this group of countries won't go unanswered", the Ministry said. Ukraine will expel 13 diplomats and Canada four.
Over 100 Russian diplomats are being banished from their posts around the world, and EU Council President Donald Tusk warned that further expulsions could lie ahead.
"Therefore a country which is leaving the European Union is exploiting the solidarity factor and is foisting on those countries that remain a worsening of relations with Russian Federation".