The Delhi police on Saturday filed an appeal in the Supreme Court challenging a Delhi high court order acquitting lecturer S A R Geelani and Afsan Guru in the Parliament attack case.

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Five terrorists had attacked Parliament on December 13, 2001. All five were killed.

Geelani and Afsan Guru, along with Jaish-e-Mohammed operatives Mohammad Afzal and Shaukat Hussain Guru, Afsan Guru's husband, were charged as conspirators in the attack.

While the high court absolved Geelani and Afsan Guru of all charges on October 29, it confirmed the death sentences for Afzal and Shaukat Hussain Guru.

The police timed their appeal to coincide with the second anniversary of the attack on Parliament. It said the high court failed to take into account the relevant evidence bringing out the clear involvement of Geelani and Afsan Guru.