The Congress party has denied allegations against its leaders
Top Indian Congress party leaders Sonia and Rahul Gandhi are due to appear in court in connection with a corruption case.
They are accused of acquiring the assets of a newspaper illegally. They deny any wrongdoing. The Congress leaders will appear before a district court in Delhi on Saturday.
The petitioner, Subramanian Swamy of the ruling BJP party, says the Gandhis took over the newspaper for its considerable assets.
The National Herald newspaper, which ceased publication in 2008, was acquired by the Congress in 2010.
Hundreds of Congress party supporters are expected to gather near the court on Saturday to support party president Sonia Gandhi and vice-president Rahul Gandhi, reports say.
The Delhi high court on 7 December rejected the Gandhis' plea to be exempted from personal appearance in the district .
The party had previously said it wanted to revive the paper, established in 1938 by India's first prime minister Jawaharlal Nehru.
But Mr Swamy has alleged that the leaders used the party funds illegally to acquire the newspaper's properties.
The case has also disrupted the ongoing session of the parliament with Congress MPs blaming the Bharatiya Janata Party (BJP) of "political vendetta".
"[This is] political vendetta. Pure political vendetta coming out of PMO [prime minister's office]. It is their way of doing politics. Pure 100% vendetta," Mr Gandhi told reporters outside the parliament on 10 December.
He said he had "full faith in judiciary" and added that "we will see at the end what comes out. Truth will come out".
The BJP has rejected Mr Gandhi's allegations.
"How is parliament involved if some people have been summoned by a court? You [Gandhis] want to silence the judiciary. You want to intimidate the judiciary. You are telling the judiciary, how dare you summon us," Parliamentary Affairs Minister Venkaiah Naidu said.
The Congress party lost general elections last year, winning only 44 of the 543 seats after governing India for 10 years.
The BJP won a landslide victory in the polls and formed a government.
