The Palestinian Foreign Ministry in Ramallah has applied to join the case, the court announced in The Hague on Monday evening.
The ministry requested this on behalf of Palestine, which the United Nations has not recognised as a state, but has observer status at the UN.
Saudi Arabia condemns Israel’s ‘continuous genocidal massacres’
It is unclear when the court will rule on the Palestinian application.
If it were approved, the Palestinian authorities would be allowed to participate in the proceedings.
Other countries have also signalled their intention to join South Africa’s genocide lawsuit.
These include Colombia, Libya, and Nicaragua.
South Africa filed a complaint against Israel with the highest court of the United Nations at the end of 2023, accusing the state of violating the Genocide Convention due to its attacks on the Gaza Strip.
In three decisions to date, the court has obliged Israel to take immediate measures to protect civilians.
However, the main proceedings on the accusation of genocide are not affected by this.
It could drag on for years.
Israel has strictly rejected the accusations and invoked its right to self-defense following the terrorist attack by the Palestinian militant group Hamas and other groups on Oct. 7.
Around 1,200 people were murdered in the attack.
According to the Palestinian authorities, more than 36,000 people have been killed by Israeli attacks since then.