Opposition Imran Khan’s party on Saturday challenged in Lahore High Court the candidature of ousted Pakistan prime minister Nawaz Sharif’s wife, Kulsoom Nawaz, alleging that her nomination papers contained contradictions and that she did not appear in person to file the papers.

Mr. Sharif’s ruling Pakistan Muslim League-Nawaz (PML-N) has fielded his wife from the constituency he vacated after the Supreme Court disqualified him from continuing in his office in July.

Pakistan Tehreek-i-Insaf of Mr. Khan, who has led a campaign and petitioned the Supreme Court seeking Mr. Sharif’s ouster over the Panama Papers scandal, challenged the acceptance of Ms. Kulsoom’s nomination papers on Thursday from Lahore’s NA—120 constituency.

The election is scheduled for September 17.

Petitioner Andaleeb Abbasi, a leader of the PTI, said Ms. Kulsoom’s nomination papers contained contradictions.

“Kulsoom Nawaz holds a work permit of UAE, like that of her husband on which he was disqualified,” Mr. Abbasi claimed.

She also said that the nomination papers were accepted by the election commission despite her not appearing in person.

Rival Pakistan People’s Party (PPP) candidate Faisal Mir has also opposed her nomination on the grounds that being the wife of a deposed premier she was not eligible to contest the election.

Several PML-N leaders believe that Ms. Kulsoom will replace current Prime Minister Shahid Khaqan Abbasi after winning the September 17 election. And Mr. Sharif will return to the Prime Minister’s House as ‘First Gentleman’

Mr. Sharif had announced his younger brother Shahbaz Sharif’s name as the party candidate for the NA—120 constituency. But his name was later withdrawn from the electoral race.

Ms. Kulsoom had successfully led the party’s movement for the release of Mr. Sharif, then incarcerated, after a military coup by former president Parvez Musharraf in 1999.