At an international conference in London on Monday, the International Criminal Court (ICC) received additional financial and technical resources to support its investigations in Ukraine from about 40 countries, in aid that comes three days after the court issued an arrest warrant for Russian President Vladimir Putin.

At the end of the conference, Justice Secretary Dominic Raab said that "given the indictment against President Putin on Friday, it was very important (...) to demonstrate our concrete support for the ICC."

In addition to Raab, his peers and representatives from about 40 countries participated in the conference.

"We have raised over £4 million and a lot of technical and non-financial support" for the ICC's work in Ukraine, he said.

Ahead of the opening of the conference, ICC Prosecutor Karim Khan said the court would "not hesitate to act" to prosecute alleged war crimes in Ukraine.

At the start of the conference, jointly organised by Britain and the Netherlands, where the court is based, Khan said: "We collectively need to persevere to achieve justice."

EU Justice Commissioner Didier Reynders also participated in the conference.

The International Criminal Court (ICC), based in The Hague, has launched an investigation into possible war crimes and crimes against humanity committed as part of Moscow's war against Ukraine since 24 February 2022, in the vast majority of cases of which Russian forces have been charged.

On Friday, the court issued an arrest warrant for Russian President Vladimir Putin and Russian Commissioner for Children's Rights Maria Lvova-Belova for "illegal deportation" of Ukrainian children.

To conduct its investigations, the ICC needs financial and technical capabilities. Last December, ICC Prosecutor Karim Khan called on the international community to increase its support for the institution.

London has already announced additional funding of nearly 400,452 pounds (1,13 euros), bringing its total support to <> million pounds (<>.<> million euros) since last year, to fund psychological support for witnesses and victims of crime or strengthen British experts at the International Criminal Court.

Justice Secretary Dominic Raab said in a statement that the conference was defending a case for "holding war criminals accountable for the atrocities committed in Ukraine during this unjust, unprovoked and unlawful invasion."