* German minister urges tougher EU stance on gas imports
* Ukraine demands tougher sanctions on Russia
* Russia says West has declared economic war (Adds Italian foreign minister in par 9)
By Natalia Zinets
LVIV, Ukraine, April 3 (Reuters) - Germany said on Sunday that the West would agree to impose more sanctions on Russia in the coming days after Ukraine accused Russian forces of war crimes near Kyiv, ratcheting up the already vast economic pressure on Russia over its invasion.
Russia's economy is facing the gravest crisis since the 1991 collapse of the Soviet Union after the United States and its allies imposed crippling sanctions due to Putin's Feb. 24 invasion of Ukraine.
Russia on Sunday denied its forces were responsible for the deaths of civilians in the town of Bucha and said Ukraine had staged a performance for the Western media.
Reuters saw corpses strewn across the town. One appeared to have his hands bound with white cloth, and to have been shot in the mouth. Ukrainian President Volodymyr Zelenskiy accused Russia of carrying out a genocide.
The West warned of more sanctions.
"Putin and his supporters will feel the consequences" of their actions, German Chancellor Olaf Scholz said in a statement to reporters.
German Defence Minister Christine Lambrecht said the European Union should talk about ending Russian gas imports.
Germany, Europe's largest economy, has so far resisted calls to impose an embargo on energy imports from Russia, saying its economy and that of other European countries are too dependent on them. Russia supplies 40% of Europe's gas needs.
Italy's Foreign Minister Luigi Di Maio said the events in Bucha were "unleashing a wave of indignation that will lead to new sanctions" and did not exclude "that in the next few hours there could be a debate on the issue of imports of hydrocarbons from Russia", he told a programme on Italy's Rai 3 channel, adding Italy would not veto a fifth package of sanctions.
The United States said that those responsible for any war crimes must be held responsible, Britain said it was stepping up its sanctions and France condemned "massive abuses" by Russian forces in Ukraine.
SANCTIONS
The Kremlin says the West's sanctions - the most burdensome in modern history - amount to a declaration of economic war and that Moscow will now look eastwards to partners such as China and India.
Largely cut off from the West's economies, Russia is facing the biggest economic contraction for decades while prices are rising. Putin said that the West understands nothing about Russia if it thinks Russians will give in to sanctions.