Supporters of Spanish Prime Minister Pedro Sanchez prepared on Friday to hold rallies to urge him to stay on after he announced this week he was considering stepping down as a court looks into allegations of business corruption made against his wife.

Spain's Prime Minister Pedro Sanchez on Wednesday said he will suspend public duties until next week to decide whether he wants to continue leading the government after a court launched a preliminary probe of his wife.

In a surprise move, Pedro Sanchez says he will announce his decision on whether to remain as leader of the country next Monday, in an appearance before the news media.

Spain's Prime Minister Pedro Sanchez said on Wednesday he would step back from public duties "for a few days" to decide whether he wants to continue leading the government after a court launched a business corruption probe into his wife's private dealings.

Prime Minister Pedro Sanchez announced that he may resign after a court in Spain opened an investigation into his wife, pushing the country into uncharted political territory and raising the possibility of a new general election.