The Philippine House of Representatives impeached the Supreme Court chief justice Monday over alleged corruption and favoritism toward the country's former president, now under hospital arrest for alleged election fraud.

A majority of the 284 members of the powerful House signed the resolution to impeach Chief Justice Renato Corona, who will now be tried by the Senate in an impeachment tribunal. Corona, who became the only known Supreme Court chief to be impeached in Philippine history, vowed to fight back.

Among its allegations, the impeachment complaint accuses the Corona-led court of ruling improperly in ex-President Gloria Macapagal Arroyo's favor when she sought to leave the country last month before she was arrested.

The surprise move is the latest twist in the Philippine political drama pitting Arroyo against her popular, reformist successor Benigno Aquino III, who has blamed her for a decade of corruption scandals that eroded public trust in government and held back foreign investors.